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102. Perionyx kempi Stephenson, 1914 Perionyx kempi Stephenson, 1914a: 389. T. Kobo in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh: Doju Bung (Julka 1981), Zero Camp Namdapha (Halder et al. 2007)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93."]}

103. Perionyx koboensis Stephenson, 1914 Perionyx koboensis Stephenson, 1914a: 391. T. Kobo in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh . R. The species is doubtfully considered as junior synonym of Perionyx excavatus (see Blakemore 2010: 267)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]"]}

119. Perionyx variegatus (Michaelsen, 1907) Perionychella variegata Michaelsen, 1907: 158. T. Phallut, district Darjeeling, West Bengal, India. D. Arunachal Pradesh: Sinkie River near Police Colony Itanagar (Halder et al. 2007). Sikkim : Nathang (Soota & Halder 1981). West Bengal ., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234."]}

100. Perionyx inornatus Stephenson, 1916 Perionyx inornatus Stephenson, 1916: 320. T. Sandakphu, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354."]}

45. Dichogaster modiglianii (Rosa, 1896) Benhamia modiglianii Rosa, 1896: 510. For synonyms see Csuzdi (2010: 84). T. Pedang, Sumatra, Indonesia. D. Meghalaya: Tura (Julka 1988a), Ward Lake Shillong (Halder 1999b). Sikkim: Namchi (Halder 2003), Sombaria (Halder 2003). Tripura: Unspecified localities (Chaudhuri & Bhattacharjee 1999, 2005; Chaudhuri et al. 2012). West Bengal: Siliguri (Halder 1999a)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 285, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Rosa, D. (1896) Ilombrichi raccolti a Sumatra dal Dott. E. Modigliani. Annali del Museo Civico di Storia Naturale di Genova, Serie 2, 16, 502 - 532.","Csuzdi, Cs. (2010) A monograph of the paleotropical Benhamiinae earthworms (Annelida: Oliochaeta, Acanthodrilidae). Pedozoologica Hungarica, No. 6, 1 - 215.","Julka, J. M. (1988 a) The Fauna of India and the adjacent countries. Megadrile Oligochaeta (Earthworms). Haplotaxida: Lumbricina: Megascolecoidea: Octochaetidae. Zoological Survey of India, Calcutta, 400 pp.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Halder, K. R. (2003) Oligochaeta: Earthworm. In: State Fauna. Series 9. Fauna of Sikkim. Part 5. Zoological Survey of India, Calcutta, pp. 91 - 116.","Chaudhuri, P. S. & Bhattacharjee, G. (1999) Earthworm resources of Tripura. Proceedings of the National Academy of Sciences, India, 69 (B), 159 - 170.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346.","Halder, K. R. (1999 a) Annelida: Oligochaeta: Earthworms. In: State Fauna. Series 3. Fauna of West Bengal. Part 10. Zoological Survey of India, Calcutta, pp. 17 - 93."]}

108. Perionyx pincernus Stephenson, 1916 Perionyx pincerna Stephenson, 1916: 319. Perionyx pincernus Stephenson. Blakemore 2007: 47. T. Near Ghoom, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354.","Blakemore, R. J. (2007) Checklist of 505 earthworms species from India, Sri Lanka and the adjacent regions (excluding Myanmar) compiled from various sources [e. g. Stephenson (1923), Gates (1972), Julka (1988) etc.]. In: Blakemore, R. J. (Ed.), A series of searchable texts on earthworm biodiversity, ecology and systematic from various regions of the world. 3 rd Edition. Available from: http: // www. annelida. net / earthworm (accessed 1 March 2020)"]}

74. Kanchuria octotheca Julka, 1988 Kanchuria octotheca Julka, 1988b: 88. T. Tura, Garo Hills, Meghalaya, India. D. Meghalaya: Phud-Umlieh (Kharkongor 2018), Nongstoi��-Siejlieh (Kharkongor 2018), Pamphyrnai (Kharkongor 2018), Winnia Falls (Kharkongor 2018), Nongstoi�� (Kharkongor 2018), Mawlongphlang (Kharkongor 2018), on way to Langja village (Kharkongor 2018), Nondei�� (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 290, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1988 b) On a new genus and three new species of earthworms (Megascolecidae: Oligochaeta) from northeast India. Research Bulletin (Science) Panjab University, 39, 85 - 92.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

43. Dichogaster annae (Horst, 1893) Benhamia annae Horst, 1893: 32. Benhamia travancorensis Fedarb, 1898: 433. Dichogaster curgensis Michaelsen, 1922: 54. Dichogaster curgensis var. unilocularis Stephenson, 1931a: 69. Dichogaster (Diplothecodrilus) annae (Horst). Csuzdi 1995: 112. For further synonyms see Blakemore (2010: 227). T: Cameroon (and Java). D. Sikkim: Khamdong (Subedi et al. 2018c), Lower Barbing (Subedi et al. 2018c), Tarku (Subedi et al. 2018c), Temi Tarku (Subedi et al. 2018c)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 285, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Horst, H. (1893) Earthworms from the Malay Archipelago. Zoologische Ergebnisse einer Reise in Niederlandisch-Ost-Indien, 3, 28 - 77.","Fedarb, S. M. (1898) On some earthworms from India. Journal of the Bombay Natural History Society, 11 (3), 431 - 437.","Michaelsen, W. (1922) Oligochaten vom westlichen Vorderindien und ihre Beziehungen zur Oligochatenfauna von Madagaskar und den Seychellen. Mitteilungen aus dem Zoologischen Staatsinstitut und Museum in Hamburg, 38, 27 - 68.","Stephenson, J. (1931 a) Oligochaeta from Burma, Kenya and other parts of the world. Proceedings of the Zoological Society of London, 1931, 33 - 92.","Csuzdi, Cs. (1995) A catalogue of Benhamiinae species (Annelida: Oligochaeta: Acanthodrilidae). Annalen des Naturhistorischen Museums in Wien, 97 B, 99 - 123.","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Subedi, H. P., Saxena, R. M. & Reynolds, J. W. (2018 c) New earthworm (Oligochaeta: Octochaetidae) records of Dichogaster curgensis and Octochaetona beatrix from Sikkim. Megadrilogica, 23, 131 - 137."]}

113. Perionyx rufulus Gates, 1945 Perionyx rufulus Gates, 1945: 74. T. Khezhabama, Nagaland, India. D. Nagaland., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Gates, G. E. (1945) On some Indian earthworms. II. Journal of the Royal Asiatic Society of Bengal, 11, 54 - 91."]}

71. Amynthas papulosus (Rosa, 1896) Perichaeta papulosa Rosa, 1896: 525. Amynthas papulosus (Rosa). Blakemore 2010: 368 (for further synonyms). T. Balighe (now Balige), Sumatra, Indonesia. D. Meghalaya: Nongstoi�����Siejlieh (Kharkongor 2018). R. Tentative identification (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on pages 289-290, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Rosa, D. (1896) Ilombrichi raccolti a Sumatra dal Dott. E. Modigliani. Annali del Museo Civico di Storia Naturale di Genova, Serie 2, 16, 502 - 532.","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

42. Dichogaster affinis (Michaelsen, 1890) Benhamia affinis Michaelsen, 1890b: 9. Dichogaster (Diplothecodrilus) affinis (Michaelsen). Csuzdi 1996: 357. Further synonyms in Blakemore (2010: 224). T. Quilimane, Mozambique. D. Arunachal Pradesh: Taliha (Julka 1981). Meghalaya: Tura (Julka 1988a). Tripura: Unspecified localities (Chaudhuri et al. 2008, 2009, 2012; Jamatia & Chaudhuri 2017)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 285, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1890 b) Beschreibung der von Herrn Dr. Stuhlmann im Mundungsgebiet des Sambesi gesammelten Terricolen. Jahrbuch der hamburgischen wissenschaftlichen Anstalten, 7, 1 - 30.","Csuzdi, Cs. (1996) Revision der Unterfamilie Benhamiinae Michaelsen, 1897 (Oligochaeta: Acanthodrilidae). Mitteilungen aus dem Zoologischen Museum in Berlin, 72, 347 - 367. https: // doi. org / 10.1002 / mmnz. 19960720219","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1988 a) The Fauna of India and the adjacent countries. Megadrile Oligochaeta (Earthworms). Haplotaxida: Lumbricina: Megascolecoidea: Octochaetidae. Zoological Survey of India, Calcutta, 400 pp.","Chaudhuri, P. S., Nath, S. & Paliwal, R. (2008) Earthworm population of rubber plantations (Hevea brasiliensis) in Tripura, India. Tropical Ecology, 49, 225 - 234.","Chaudhuri, P. S., Nath, S., Bhattacharjee, S. & Paliwal, R. (2009) Biomass, density and diversity of earthworms under rubber (Hevea brasiliensis) plantations in Tripura, India. The Bioscan, 4 (3), 475 - 479.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346.","Jamatia, S. K. S. & Chaudhuri, P. S. (2017) Earthworm community structure under tea plantations (Camellia sinensis) of Tripura (India). Tropical Ecology, 58, 105 - 113."]}

114. Perionyx setnai Stephenson, 1931 Perionyx setnai Stephenson, 1931a: 63. T. Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1931 a) Oligochaeta from Burma, Kenya and other parts of the world. Proceedings of the Zoological Society of London, 1931, 33 - 92."]}

104. Perionyx macintoshi Beddard, 1883 Perionyx ���m���intoshii ��� Beddard, 1883: 217. ? Lampito dubius Stephenson, 1916: 315. ? Megascolex dubius (Stephenson). Stephenson 1923: 240. Perionyx macintoshi Beddard. Gates 1972: 144 (for complete synonymy). T. Akyab, Myanmar. D. Arunachal Pradesh: Yame (Julka 1981), Pabin (Julka 1981), Damin (Julka 1981), Vidak (Julka 1981), ca. 7.5 km S of Mursing village (Julka & Halder 1975). Meghalaya: Dumpep (Gates 1952), Cantonment Hill Cherrapunji (Stephenson 1924b), Cherrapunji (Michaelsen 1910), Mawsmai Cave Cherrapunji (Halder 1999b). Mizoram: Pachhunga University College Aizawl (Lalthanzara & Ramanujam 2014), unspecified localities (Lalthanzara et al. 2011; Ramanujam et al. 2004). Tripura: Unspecified localities (Chaudhuri et al. 2012). West Bengal: ? Kurseong (Stephenson 1916), near Goomti Rest House Mahanadi (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Beddard, F. E. (1883) Note on some earthworms from India. Annals and Magazine of Natural History, Series 6, 12 (70), 213 - 224. https: // doi. org / 10.1080 / 00222938309459619","Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354.","Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp.","Gates, G. E. (1972) Burmese earthworms. An introduction to the systematics and biology of megadrile oligochaetes with special reference to southeast Asia. Transactions of the American Philosophical Society, 62 (7), 1 - 326. https: // doi. org / 10.2307 / 1006214","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. & Halder, K. R. (1975) On the occurrence of the giant earthworm, Perionyx macintoshi Beddard, in Bhutan and Arunachal Pradesh (India). Proceedings of the Zoological Society of Calcutta, 28, 15 - 17.","Gates, G. E. (1952) On some earthworms from Burma. American Museum Novitates, No. 1555, 1 - 13.","Stephenson, J. (1924 b) On some Indian Oligochaeta, with a description of two new genera of Ocnerodrilinae. Records of the Indian Museum, 26, 317 - 365.","Michaelsen, W. (1910) Die Oligochatenfauna der vorderindisch-ceylonischen Region. Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, 19 (5), 1 - 108.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Lalthanzara, H. & Ramanujam, S. N. (2014) Earthworm cast production and physico-chemical properties in two agroforestry systems of Mizoram (India). Tropical Ecology, 55, 77 - 86.","Lalthanzara, H., Ramanujam, S. N. & Jha, L. K. (2011) Population dynamics of earthworms in relation to soil physico-chemical parameters in agroforestry systems of Mizoram, India. Journal of Environmental Biology, 32, 599 - 605.","Ramanujam, S. N., Lalthanzara, H. & Jha, L. K. (2004) Biodiversity of earthworms in Mizoram. Journal of Nature Conservators, 16, 129 - 134.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346."]}

89. Perionyx annulatus Stephenson, 1914 Perionyx annulatus Stephenson, 1914a: 386. T. South of Yembung and Rotung in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193"]}

91. Perionyx daminensis Julka, 1981 Perionyx daminensis Julka, 1981: 20. T. Damin, district Subansiri, Arunachal Pradesh, India. D. Arunachal Pradesh., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

110. Perionyx pokhrianus affinis Stephenson, 1920 Perionyx pokhrianus var. affinis Stephenson, 1920: 210. Perionyx pokhrianus affinis Stephenson. Blakemore 2007: 47. T. Sitong Ridge, Jorpokhri, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Blakemore, R. J. (2007) Checklist of 505 earthworms species from India, Sri Lanka and the adjacent regions (excluding Myanmar) compiled from various sources [e. g. Stephenson (1923), Gates (1972), Julka (1988) etc.]. In: Blakemore, R. J. (Ed.), A series of searchable texts on earthworm biodiversity, ecology and systematic from various regions of the world. 3 rd Edition. Available from: http: // www. annelida. net / earthworm (accessed 1 March 2020)"]}

117. Perionyx sikkimensis michaelseni Stephenson, 1923 Perionyx sikkimensis var. michaelseni Stephenson, 1923: 359. Perionyx sikkimensis (Michaelsen). Michaelsen 1910 (in part): 60. T. Gangtok, Sikkim, India. D. Sikkim., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp.","Michaelsen, W. (1910) Die Oligochatenfauna der vorderindisch-ceylonischen Region. Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, 19 (5), 1 - 108."]}

107. Perionyx pallidus Stephenson, 1917 Perionyx pallidus Stephenson, 1917: 376. T. Kalimpong, district Kalimpong, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1917) On a collection of Oligochaeta from various parts of India and further India. Records of the Indian Museum, 13, 353 - 416. https: // doi. org / 10.5962 / bhl. part. 5865"]}

75. Kanchuria sumerianus Julka, 1988 Kanchuria sumerianus Julka, 1988b: 89. T. Sumer nr. Shillong, Meghalaya, India. D. Manipur: Koirengei Forest (Haokip & Singh 2017). Meghalaya: Shillong (Julka 1988b), about 4 km on Nongstoi�����Nongkhnum Road (Kharkongor 2018). Tripura: Suba Lake (Halder 2000), Fuldensei (Halder 2000), Vangmun (Halder 2000), Moharchhora (Halder 2000), Aglapur (Halder 2000), Dakshin Nayapara (Halder 2000), Asarambari (Halder 2000), Dakshin Pulinpur (Halder 2000), unspecified localities (Chaudhuri et al. 2008, 2009, 2012; Dey & Chaudhuri 2014, 2016)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 290, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1988 b) On a new genus and three new species of earthworms (Megascolecidae: Oligochaeta) from northeast India. Research Bulletin (Science) Panjab University, 39, 85 - 92.","Haokip, S. L. & Singh, T. B. (2017) Comparative studies on the earthworm community structure in the natural mixed and oak plantation sub-tropical forests ecosystem of Imphal, Manipur, India. International Journal of Ecology and Environmental Sciences, 43, 319 - 329.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Halder, K. R. (2000) Oligochaeta: Earthworm. In: State Fauna. Series 7. Fauna of Tripura. Part 4. Zoological Survey of India, Calcutta, pp. 239 - 236.","Chaudhuri, P. S., Nath, S. & Paliwal, R. (2008) Earthworm population of rubber plantations (Hevea brasiliensis) in Tripura, India. Tropical Ecology, 49, 225 - 234.","Chaudhuri, P. S., Nath, S., Bhattacharjee, S. & Paliwal, R. (2009) Biomass, density and diversity of earthworms under rubber (Hevea brasiliensis) plantations in Tripura, India. The Bioscan, 4 (3), 475 - 479.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346.","Dey, A. & Chaudhuri, P. S. (2014) Earthworm community structure of pineapple (Ananas comosus) plantations under monoculture and mixed culture in West Tripura, India. Tropical Ecology, 55, 1 - 17.","Dey, A. & Chaudhuri, P. S. (2016) Species richness, community organization, and spatiotemporal distribution of earthworms in the pineapple agroecosystems of Tripura, India. International Journal of Ecology, 2016, 1 - 19. https: // doi. org / 10.1155 / 2016 / 3190182"]}

95. Perionyx foveatus Stephenson, 1914 Perionyx foveatus Stephenson, 1914a: 396. T. Renging, Rotung and upper Rotung in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh. Meghalaya: Nonglang village (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

118. Perionyx turaensis Stephenson, 1920 Perionyx turaensis Stephenson, 1920: 216. T. Tura, Garo Hills, Meghalaya, India. D. Arunachal Pradesh: 79 Mile Camp on Miao-Vijaynagar Road (Halder et al. 2007). Meghalaya: Malki (Halder 1999b). R. The species is possibly a synonym of Perionyx excavatus (Gates 1972: 147; Blakemore 2010: 267)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Gates, G. E. (1972) Burmese earthworms. An introduction to the systematics and biology of megadrile oligochaetes with special reference to southeast Asia. Transactions of the American Philosophical Society, 62 (7), 1 - 326. https: // doi. org / 10.2307 / 1006214","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]"]}

44. Dichogaster bolaui (Michaelsen, 1891) Benhamia bolavi (corr. bolaui) Michaelsen, 1891: 9. Dichogaster bolaui malabaricus Stephenson, 1920: 257. Dichogaster (Diplothecodrilus) bolaui (Michaelsen). Csuzdi 1995: 102. Further synonyms in Blakemore (2010: 230). T. Bergedorf, Germany. D. Arunachal Pradesh: Taliha (Julka 1981), Ayumuring (Julka 1981), Wakro (Julka 1976, 1988a), Chowkham (Julka 1988a). Manipur: Koirengei Forest (Haokip & Singh 2017). Meghalaya: Barapani (Julka 1977, 1988a), Cherrapunji (Julka 1988a), Siju Cave (Stephenson 1924a), Nongpyndeng (Kharkongor 2018), Phud-Umlieh (Kharkongor 2018), Pamphyrnai (Kharkongor 2018), Mawthar village (Kharkongor 2018), Mawshynrut village (Kharkongor 2018), on way to Nongstoi�� from Markasa (Kharkongor 2018). Sikkim: Rimbi (Soota & Halder 1981). Tripura: Unspecified localities (Chaudhuri & Bhattacharjee 2005; Chaudhuri et al. 2008, 2009, 2012; Jamatia & Chaudhuri 2017)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 285, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1891) Oligochaeten des Naturhistorischen Museums in Hamburg. IV. Jahrbuch der hamburgischen wissenschaftlichen Anstalten, 8, 3 - 42.","Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Csuzdi, Cs. (1995) A catalogue of Benhamiinae species (Annelida: Oligochaeta: Acanthodrilidae). Annalen des Naturhistorischen Museums in Wien, 97 B, 99 - 123.","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1976) Studies on the earthworms collected during the Daphabum Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, 69, 229 - 239.","Julka, J. M. (1988 a) The Fauna of India and the adjacent countries. Megadrile Oligochaeta (Earthworms). Haplotaxida: Lumbricina: Megascolecoidea: Octochaetidae. Zoological Survey of India, Calcutta, 400 pp.","Haokip, S. L. & Singh, T. B. (2017) Comparative studies on the earthworm community structure in the natural mixed and oak plantation sub-tropical forests ecosystem of Imphal, Manipur, India. International Journal of Ecology and Environmental Sciences, 43, 319 - 329.","Stephenson, J. (1924 a) Oligochaeta of the Siju Cave, Garo Hills, Assam. Records of the Indian Museum, 26, 127 - 135.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234.","Chaudhuri, P. S., Nath, S. & Paliwal, R. (2008) Earthworm population of rubber plantations (Hevea brasiliensis) in Tripura, India. Tropical Ecology, 49, 225 - 234.","Chaudhuri, P. S., Nath, S., Bhattacharjee, S. & Paliwal, R. (2009) Biomass, density and diversity of earthworms under rubber (Hevea brasiliensis) plantations in Tripura, India. The Bioscan, 4 (3), 475 - 479.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346.","Jamatia, S. K. S. & Chaudhuri, P. S. (2017) Earthworm community structure under tea plantations (Camellia sinensis) of Tripura (India). Tropical Ecology, 58, 105 - 113."]}

90. Perionyx daflaensis Julka, 1981 Perionyx daflaensis Julka, 1981: 18. T. Kolang, district Subansiri, Arunachal Pradesh, India. D. Arunachal Pradesh: Near Kau Pass (Julka 1981), 3 km E of Richik (Julka 1981), Rui (Julka 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

67. Amynthas corticis (Kinberg, 1867) Perichaeta corticis Kinberg, 1867: 102. Amynthas corticis (Kinberg). Blakemore 2010: 322 (for further synonyms). T. Oahu, the main Hawaii Island. D. Arunachal Pradesh: Taliha (Julka 1981), Siki (Julka 1981), Seiom (Julka 1981), Lemeking (Julka 1981), Orak (Julka 1981), Galensinaik (Julka 1981), Deju Bung (Julka 1981), Yame (Julka 1981), Holin (Julka 1981), Huri (Julka 1981), Damin (Julka 1981), Richik (Julka 1981), Tali (Julka 1981), Rui (Julka 1981), Gimba (Julka 1981), Chowkham (Julka 1976), Alubari (Julka 1976), Chakama village (Julka 1976), Wakro (Julka 1976), near Chamba village (Julka 1976), Hawai (Julka 1976), Kharang (Julka 1976), Hayuliang (Julka 1976), Tezu (Julka 1976), Kobo (Stephenson 1914a), Itanagar Zoo (Halder et al. 2007), Yupia-Doimukh Road (Halder et al. 2007), Papu Nallah (Halder et al. 2007), Ganga Lake (Halder et al. 2007), 77 Mile Base Camp Tirap (Halder et al. 2007), Gandhigram (Halder et al. 2007), Vijaynagar (Halder et al. 2007), Lower Jheel Camp (Halder et al. 2007), 124 km on Miao-Vijaynagar Road (Halder et al. 2007), Deban (Halder et al. 2007), Hornbill (Halder et al. 2007). Assam: Sadiya (Stephenson 1914a), unspecified localities (Rajkhowa et al. 2015). Manipur: Imphal (Stephenson 1921), Mantripukhri (Haokip & Singh 2012, 2017), Koirengei Forest (Haokip & Singh 2017). Meghalaya: Mawphlang (Julka 1977; Halder 1999b), Cherrapunji (Stephenson 1922; Julka 1977; Bhadauria & Ramakrishnan 1989), Cantonment Hill Cherrapunji (Stephenson 1924b), Shillong (Gates 1934; Julka 1977), Nongkynrih (Julka 1977), Barapani (Julka 1977), Myllien (Julka 1977), Malki (Julka 1977), Motinagar (Halder 1999b), Risa Colony (Halder 1999b), Lumparing (Halder 1999b), Elephant Falls (Halder 1999b), Sohryngkham (Halder 1999b), Mairang (Halder 1999b), Mazumai (Halder 1999b), Raliang (Halder 1999b), Nongthymmai (Halder 1999b), Botanical Garden Shillong (Halder 1999b), Mauryngnang (Halder 1999b), Happy Valley Shillong (Gates 1934; Halder 1999b), Golf Course Shillong (Gates 1934), North of Mokhar (Gates 1934), Jowai (Halder 1999b), Thadlaskein (Halder 1999b), Nartiang (Gates 1934; Halder 1999b), Muktapur (Halder 1999b), Saphai (Halder 1999b), Nongpoh (Halder 1999b), Tura (Halder 1999b), Rongram River (Halder 1999b), Ward Lake Shillong (Halder 1999b), Mawsmai Cave Cherrapunji (Halder 1999b), Dumpep (Gates 1934, 1937), Nongkhnum-Lailad (Kharkongor 2018), Pamphyrnai (Kharkongor 2018), Nongstoi��-Nongpyndeng (Kharkongor 2018), Mawthar village (Kharkongor 2018), Langja village (Kharkongor 2018), Mawshynrut village (Kharkongor 2018), Nongstoi�����Mawlongphlang (Kharkongor 2018). Mizoram: Unspecified localities (Ramanujam et al. 2004). Sikkim: Timin (Halder 2003), Rabangla (Halder 2003), Rangpo (Halder 2003), Ranipool (Halder 2003), Rumtek (Halder 2003), Mangan (Halder 2003), Phodong (Halder 2003), Phensang (Halder 2003), Gangtok (Michaelsen 1910; Soota & Halder 1981; Halder 2003), Jorthang (Halder 2003), Namchi (Halder 2003), Naya Bazar (Halder 2003), Deorali (Soota & Halder 1981), Rimbi (Soota & Halder 1981). West Bengal: Kurseong (Michaelsen 1909; Stephenson 1916, 1925; Gates 1934; Julka 1975; Halder 1999a), near Singell (Julka 1975); Ghoom (misnomer Soom���Stephenson 1916; Julka 1975), Dhobikhola (Halder 1999a), Dhobijhora (Gates 1937), Dow Hill (Julka 1975), Kali Jhora (Gates 1934), Pedong (Halder 1999a), Lloyd���s Botanic Gardens Darjeeling (Julka 1975), Darjeeling (Stephenson 1916; Halder et al. 2007), Singla (Stephenson 1916; Gates 1934), Sureil (Stephenson 1920), Pashok (Stephenson 1920), Kafibari (Gates 1934),, Resium Forest (Halder 1999a), Kalimpong (Gates 1934, 1937; Julka 1975), Teesta Bridge (Gates 1934, 1937), Mahanadi (Julka 1975), Sukiapokri (Julka 1975), Manikhola (Halder 1999a), Manebhanjan (Soota & Halder 1981), Jorpokri (Julka 1975), Ghum Bhanjan (Julka 1975), along Sukiapokri-Simana Road (Julka 1975), midway between Sukiapokri and Jorpokri (Soota & Halder 1981), Palmajoa Forest Rest House compound (Soota & Halder 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 288, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Kinberg, J. G. H. (1867) Annulata nova. Ofversigt af Koniglich Vetenskaps-Akademiens Forhandlingar, Stockholm, 23 (9), 97 - 103 + 337 - 357.","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1976) Studies on the earthworms collected during the Daphabum Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, 69, 229 - 239.","Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Rajkhowa, D. J., Bhattacharyya, P. N., Sarma, A. K., and Mahanta, K. (2015) Diversity and distribution of earthworms in different soil habitats of Assam, North-East India, an Indo-Burma Biodiversity Hotspot. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 85 (2), 389 - 396. https: // doi. org / 10.1007 / s 40011 - 014 - 0380 - 1","Stephenson, J. (1921) Oligochaeta from Manipur, the Laccadive Islands, Mysore, and other parts of India. Records of the Indian Museum, 22, 745 - 768. https: // doi. org / 10.5962 / bhl. part. 1484","Haokip, S. L. & Singh, T. B. (2012) Diversity and distribution of earthworms in a natural reserved and disturbed tropical forest ecosystem of Imphal-West, Manipur, India. International Multidisciplinary Research Journal, 2 (2), 28 - 34.","Haokip, S. L. & Singh, T. B. (2017) Comparative studies on the earthworm community structure in the natural mixed and oak plantation sub-tropical forests ecosystem of Imphal, Manipur, India. International Journal of Ecology and Environmental Sciences, 43, 319 - 329.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Stephenson, J. (1922) Some earthworms from Kashmir, Bombay, and other parts of India. Records of the Indian Museum, 24, 427 - 443.","Bhadauria, T. & Ramakrishnan, P. S. (1989) Earthworm population dynamics and contribution to nutrient cycling during cropping and fallow phases of shifting agriculture (jhum) in north-east India. Journal of Applied Ecology, 26, 505 - 520. https: // doi. org / 10.2307 / 2404077","Stephenson, J. (1924 b) On some Indian Oligochaeta, with a description of two new genera of Ocnerodrilinae. Records of the Indian Museum, 26, 317 - 365.","Gates, G. E. (1934) Notes on some earthworms from the Indian Museum. Records of the Indian Museum, 36, 233 - 277.","Gates, G. E. (1937) Indian earthworms. I. The genus Pheretima. Records of the Indian Museum, 39 (2), 175 - 212.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Ramanujam, S. N., Lalthanzara, H. & Jha, L. K. (2004) Biodiversity of earthworms in Mizoram. Journal of Nature Conservators, 16, 129 - 134.","Halder, K. R. (2003) Oligochaeta: Earthworm. In: State Fauna. Series 9. Fauna of Sikkim. Part 5. Zoological Survey of India, Calcutta, pp. 91 - 116.","Michaelsen, W. (1910) Die Oligochatenfauna der vorderindisch-ceylonischen Region. Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, 19 (5), 1 - 108.","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234.","Michaelsen, W. (1909) The Oligochaeta of India, Nepal, Ceylon, Burma and the Andaman Islands. Memoirs of the Indian Museum, 1, 103 - 253.","Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354.","Stephenson, J. (1925) On some Oligochaeta mainly from Assam, South India, and the Andaman Islands. Records of the Indian Museum, 27, 43 - 73.","Halder, K. R. (1999 a) Annelida: Oligochaeta: Earthworms. In: State Fauna. Series 3. Fauna of West Bengal. Part 10. Zoological Survey of India, Calcutta, pp. 17 - 93.","Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261."]}

70. Amynthas papilio (Gates, 1930) Pheretima papilio Gates, 1930: 316. Amynthas papilio papilio (Gates). Sims & Easton 1972: 236. Amynthas papilio (Gates). Blakemore 2010: 367 (for further synonyms). T. San Hlan, Myanmar. D. Meghalaya: Shillong (Julka 1977)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 289, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Gates, G. E. (1930) The earthworms of Burma. I. Records of the Indian Museum, 32, 257 - 356.","Sims, R. W. & Easton, E. G. (1972) A numerical revision of the earthworm genus Pheretima auct. (Megascolecidae: Oligochaeta) with the recognition of new genera and an appendix on the earthworms collected by the Royal Society of North Borneo Expedition. Biological Journal of the Linnean Society, 4, 169 - 268. https: // doi. org / 10.1111 / j. 1095 - 8312.1972. tb 00694. x","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]"]}

72. Amynthas robustus (Perrier, 1872) Perichaeta robusta Perrier, 1872: 112. Amynthas robustus (Perrier). Blakemore 2010: 373 (for further synonyms). T. Mauritius or Manila? D. Meghalaya: Shillong (Halder et al. 2007), Domkseh (Kharkongor 2018). Sikkim: Gangtok (Halder 2003), Damthang (Halder 2003), Sombaria (Halder 2003). West Bengal: Lloyd���s Botanic Gardens Darjeeling (Julka 1975), Darjeeling (Gates 1934; Halder 1999a), Sukiapokri (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 290, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Perrier, E. (1872) Recherche pour servir a l'historie des Lombriciens terrestres. Nouvelles Archives du Museum d'Histoire Naturelle Paris, 8, 5 - 198. https: // doi. org / 10.5962 / bhl. title. 12201","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Halder, K. R. (2003) Oligochaeta: Earthworm. In: State Fauna. Series 9. Fauna of Sikkim. Part 5. Zoological Survey of India, Calcutta, pp. 91 - 116.","Gates, G. E. (1934) Notes on some earthworms from the Indian Museum. Records of the Indian Museum, 36, 233 - 277.","Halder, K. R. (1999 a) Annelida: Oligochaeta: Earthworms. In: State Fauna. Series 3. Fauna of West Bengal. Part 10. Zoological Survey of India, Calcutta, pp. 17 - 93."]}

92. Perionyx depressus Stephenson, 1914 Perionyx depressus Stephenson, 1914a: 394. Perionyx aborensis Stephenson, 1914a: 392. Perionyx depressus Stephenson. Stephenson 1923: 328. T. Rotung and Upper Rotung, Abor Hills, Arunachal Pradesh. D. Arunachal Pradesh: Renging (Stephenson 1914a), Galensinaik (Julka 1981), near Kau Pass (Julka 1981), ca. 4 km NW of Tali (Julka 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp.","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

94. Perionyx fossus Stephenson, 1920 Perionyx fossus Stephenson, 1920: 214. T. Shillong, Meghalaya, India. D. Meghalaya: About 4 km from Markasa on Markasa-Nongstoi�� Road (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

86. Nelloscolex strigosus Gates, 1939 Nelloscolex strigosus Gates, 1939: 40. T. Meghalaya, India. D. Meghalaya: Dumpep, Botanical Garden Shillong (Julka 1977), Nayabanglow (Mishra & Ramakrishnan 1988), Shillong (Bhadauria & Ramakrishnan 1989)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 291, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Gates, G. E. (1939) Indian earthworms. VI. Nelloscolex gen. nov. Records of the Indian Museum, 41 (1), 37 - 44.","Mishra, K. C. & Ramakrishnan, P. S. (1988) Earthworm population dynamics in different jhum fallows developed after slash and burn agriculture in north-eastern India. Proceedings of the Indian Academy of Sciences, (Animal Science), 97, 309 - 318. https: // doi. org / 10.1007 / BF 03179540","Bhadauria, T. & Ramakrishnan, P. S. (1989) Earthworm population dynamics and contribution to nutrient cycling during cropping and fallow phases of shifting agriculture (jhum) in north-east India. Journal of Applied Ecology, 26, 505 - 520. https: // doi. org / 10.2307 / 2404077"]}

85. Nelloscolex burkilli (Michaelsen, 1907) Woodwardia burkilli Michaelsen, 1907: 152. Nelloscolex burkilli (Michaelsen). Gates 1972: 137. T. Buthidaung, district Akyab, Myanmar. D. Meghalaya: Botanical Garden Shillong (Julka 1977), Mawphlang (Julka 1977), Winnia Falls area (Kharkongor 2018). Tripura: Unspecified localities (Chaudhuri et al. 2009, 2012)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 291, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Gates, G. E. (1972) Burmese earthworms. An introduction to the systematics and biology of megadrile oligochaetes with special reference to southeast Asia. Transactions of the American Philosophical Society, 62 (7), 1 - 326. https: // doi. org / 10.2307 / 1006214","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Chaudhuri, P. S., Nath, S., Bhattacharjee, S. & Paliwal, R. (2009) Biomass, density and diversity of earthworms under rubber (Hevea brasiliensis) plantations in Tripura, India. The Bioscan, 4 (3), 475 - 479.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346."]}

109. Perionyx pokhrianus pokhrianus Stephenson, 1920 Perionyx pokhrianus Stephenson, 1920: 208. Perionyx pokhrianus pokhrianus Stephenson. Blakemore 2007: 47. T. Jorpokhri, Sitong, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Blakemore, R. J. (2007) Checklist of 505 earthworms species from India, Sri Lanka and the adjacent regions (excluding Myanmar) compiled from various sources [e. g. Stephenson (1923), Gates (1972), Julka (1988) etc.]. In: Blakemore, R. J. (Ed.), A series of searchable texts on earthworm biodiversity, ecology and systematic from various regions of the world. 3 rd Edition. Available from: http: // www. annelida. net / earthworm (accessed 1 March 2020)"]}

66. Amynthas alexandri Beddard, 1900 Amyntas alexandri Beddard, 1900: 999. Amynthas alexandri alexandri Beddard, Blakemore 2010: 308 (for further synonyms). T. Kolkata (formerly Calcutta), West Bengal, India. D. Assam: Dibrugarh (Stephenson 1914a), unspecified localities (Rajkhowa et al. 2015). Mizoram: Unspecified localities (Ramanujam et al. 2004). Nagaland: Medziphema (Reddy 1983). Tripura: Unspecified localities (Chaudhuri & Bhattacharjee 1999, 2005; Chaudhuri et al. 2009, 2012; Dey & Chaudhuri 2014; Jamatia & Chaudhuri 2017). West Bengal: Reang (Halder 1999a)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 288, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Beddard, F. E. (1900) On a new species of earthworm from India, belonging to the Genus Amyntas. Proceedings of the Zoological Society of London, 1900, 998 - 1002.","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Rajkhowa, D. J., Bhattacharyya, P. N., Sarma, A. K., and Mahanta, K. (2015) Diversity and distribution of earthworms in different soil habitats of Assam, North-East India, an Indo-Burma Biodiversity Hotspot. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 85 (2), 389 - 396. https: // doi. org / 10.1007 / s 40011 - 014 - 0380 - 1","Ramanujam, S. N., Lalthanzara, H. & Jha, L. K. (2004) Biodiversity of earthworms in Mizoram. Journal of Nature Conservators, 16, 129 - 134.","Reddy, M. V. (1983) Effects of fire on the nutrient content and microflora of casts of Pheretima alexandri. In: Satchell, J. E. (Ed.), Earthworm Ecology, from Darwin to Agriculture. Springer, Dordrecht, pp. 209 - 213. https: // doi. org / 10.1007 / 978 - 94 - 009 - 5965 - 1 _ 17","Chaudhuri, P. S. & Bhattacharjee, G. (1999) Earthworm resources of Tripura. Proceedings of the National Academy of Sciences, India, 69 (B), 159 - 170.","Chaudhuri, P. S., Nath, S., Bhattacharjee, S. & Paliwal, R. (2009) Biomass, density and diversity of earthworms under rubber (Hevea brasiliensis) plantations in Tripura, India. The Bioscan, 4 (3), 475 - 479.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346.","Dey, A. & Chaudhuri, P. S. (2014) Earthworm community structure of pineapple (Ananas comosus) plantations under monoculture and mixed culture in West Tripura, India. Tropical Ecology, 55, 1 - 17.","Jamatia, S. K. S. & Chaudhuri, P. S. (2017) Earthworm community structure under tea plantations (Camellia sinensis) of Tripura (India). Tropical Ecology, 58, 105 - 113.","Halder, K. R. (1999 a) Annelida: Oligochaeta: Earthworms. In: State Fauna. Series 3. Fauna of West Bengal. Part 10. Zoological Survey of India, Calcutta, pp. 17 - 93."]}

98. Perionyx himalayanus Michaelsen, 1907 Perionyx himalayanus Michaelsen, 1907: 158. T. Sandakphu, district Darjeeling, West Bengal, India. D. Sikkim: Rimbi (Subedi et al. 2018b). West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Subedi, H. P., Saxena, R. M. & Reynolds, J. W. (2018 b) New records of earthworm species Amynthas morrisi, Perionyx himalayanus and Perionyx jorpokriensis (Oligochaeta; Megascolecidae) from Sikkim, India. Megadrilogica, 23, 69 - 77."]}

115. Perionyx shillongensis Stephenson, 1920 Perionyx shillongensis Stephenson, 1920: 213. T. Shillong, Meghalaya, India. D. Manipur: Koirengei Forest (Haokip & Singh 2017). Meghalaya: Umsing (Julka 1977), Malki Forest Shillong (Julka 1977). R. The species is dubiously distinguishable from Perionyx excavatus (Gates 1972: 146), therefore, may doubtfully be a synonym of P. excavatus (see Blakemore 2010: 267)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Haokip, S. L. & Singh, T. B. (2017) Comparative studies on the earthworm community structure in the natural mixed and oak plantation sub-tropical forests ecosystem of Imphal, Manipur, India. International Journal of Ecology and Environmental Sciences, 43, 319 - 329.","Gates, G. E. (1972) Burmese earthworms. An introduction to the systematics and biology of megadrile oligochaetes with special reference to southeast Asia. Transactions of the American Philosophical Society, 62 (7), 1 - 326. https: // doi. org / 10.2307 / 1006214","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]"]}

97. Perionyx heterochaetus (Stephenson, 1917) Perionyx aborensis var. heterochaetus Stephenson, 1917: 379. Perionyx heterochaetus (Stephenson). Stephenson 1923: 335. T. Pashok, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1917) On a collection of Oligochaeta from various parts of India and further India. Records of the Indian Museum, 13, 353 - 416. https: // doi. org / 10.5962 / bhl. part. 5865","Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp."]}

88. Perionyx annandalei (Michaelsen, 1907) Perionychella annandalei Michaelsen, 1907: 154. Perionyx annandalei (Michaelsen). Michaelsen 1910 (in part, excluding specimens from Cherrapunji (Meghalaya): 61. T. Kurseong, Darjeeling Hills, West Bengal, India. D. Assam: Unspecified localities (Rajkhowa et al. 2015). West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Michaelsen, W. (1910) Die Oligochatenfauna der vorderindisch-ceylonischen Region. Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, 19 (5), 1 - 108.","Rajkhowa, D. J., Bhattacharyya, P. N., Sarma, A. K., and Mahanta, K. (2015) Diversity and distribution of earthworms in different soil habitats of Assam, North-East India, an Indo-Burma Biodiversity Hotspot. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 85 (2), 389 - 396. https: // doi. org / 10.1007 / s 40011 - 014 - 0380 - 1"]}

101. Perionyx jorpokriensis Julka, 1975 Perionyx jorpokriensis Julka, 1975: 21. T. Sukiapokri and Jorpokri, district Darjeeling, West Bengal, India. D. Sikkim: Namchi (Subedi et al. 2018b). West Bengal: 1 km E of Jorpokri (Julka 1975), Palmajoa (Soota & Halder 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Subedi, H. P., Saxena, R. M. & Reynolds, J. W. (2018 b) New records of earthworm species Amynthas morrisi, Perionyx himalayanus and Perionyx jorpokriensis (Oligochaeta; Megascolecidae) from Sikkim, India. Megadrilogica, 23, 69 - 77.","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234."]}

112. Perionyx rimatus Stephenson, 1920 Perionyx rimatus Stephenson, 1920: 206. T. Jorpokhri, Sitong, district Darjeeling, West Bengal, India. D. West Bengal: Dow Hill Kurseong (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261."]}

65. Scolioscolides bergtheili (Michaelsen, 1907) Megascolides bergtheili Michaelsen, 1907: 150. Scolioscolides bergtheili (Michaelsen). Julka 1988a: 335. T. Sandakphu, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 288, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Julka, J. M. (1988 a) The Fauna of India and the adjacent countries. Megadrile Oligochaeta (Earthworms). Haplotaxida: Lumbricina: Megascolecoidea: Octochaetidae. Zoological Survey of India, Calcutta, 400 pp."]}

93. Perionyx excavatus Perrier, 1872 Perionyx excavatus Perrier, 1872: 126. Perionyx excavatus Perrier. Blakemore 2010: 267 (for further synonyms). T. Saigon, Vietnam. D. Arunachal Pradesh: Taliha (Julka 1981), Ayumuring (Julka 1981), Richik (Julka 1981), Huri (Julka 1981), Pabin (Julka 1981), Parsipapa (Julka 1981), Tumbia (Julka 1981), near Kau Pass (Julka 1981), 3 km E of Richik (Julka 1981), Kabak (Julka 1981), Vidak (Julka 1981), Chowkham (Julka 1976), Rotung (Stephenson 1914a), Renging (Stephenson 1914a), Upper Rotung (Stephenson 1914a), Miao (Halder et al. 2007), Darlak (Halder et al. 2007). Assam: Katlicherta (Stephenson 1926), Dibrugarh (Stephenson 1914a), Guwahati (Gates 1960), Sadiya (Stephenson 1914a), unspecified localities (Rajkhowa et al. 2015). Manipur: Lamphel Pat (Stephenson 1921), Imphal (Stephenson 1921), Potsengbham (Stephenson 1921), Thanga Island (Stephenson 1921). Meghalaya: Mawphlang (Julka 1977), Shillong (Julka 1977; Halder et al. 2007), Mauryngnang (Halder 1999b), Muktapur (Halder 1999b), Nonglang village (Kharkongor 2018). Mizoram: Sakawrtuichhun (Lalthanzara & Ramanujam 2014), Pachhunga University College Aizawl (Lalthanzara & Ramanujam 2014), unspecified localities (Lalthanzara et al. 2011; Ramanujam et al. 2004). Sikkim: Rangpo (Halder 2003), Gangtok (Halder 2003), Sombaria (Halder 2003), Manul (Soota & Halder 1981), Mangan (Soota & Halder 1981). Tripura: Ramnagar (Halder 2000), unspecified localities (Chaudhuri & Bhattacharjee 1999, 2005; Chaudhuri et al. 2012; Dey & Chaudhuri 2014). West Bengal: Darjeeling (Halder et al. 2007), Phallut (Michaelsen 1909), Pashok (Gates 1960), near Ghoom (Stephenson 1916), Kurseong (Michaelsen 1909), Dhobikhola Stream Kurseong (Julka 1975), Dow Hill (Julka 1975), Kalimpong (Julka 1975), near Mahananda River Siliguri (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Perrier, E. (1872) Recherche pour servir a l'historie des Lombriciens terrestres. Nouvelles Archives du Museum d'Histoire Naturelle Paris, 8, 5 - 198. https: // doi. org / 10.5962 / bhl. title. 12201","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1976) Studies on the earthworms collected during the Daphabum Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, 69, 229 - 239.","Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Stephenson, J. (1926) Descriptions of Indian Oligochaeta. I. Records of the Indian Museum, 28, 249 - 267.","Gates, G. E. (1960) On Burmese earthworms of the family Megascolecidae. Bulletin of the Museum of Comparative Zoology at Harvard College, 123 (6), 201 - 282.","Rajkhowa, D. J., Bhattacharyya, P. N., Sarma, A. K., and Mahanta, K. (2015) Diversity and distribution of earthworms in different soil habitats of Assam, North-East India, an Indo-Burma Biodiversity Hotspot. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 85 (2), 389 - 396. https: // doi. org / 10.1007 / s 40011 - 014 - 0380 - 1","Stephenson, J. (1921) Oligochaeta from Manipur, the Laccadive Islands, Mysore, and other parts of India. Records of the Indian Museum, 22, 745 - 768. https: // doi. org / 10.5962 / bhl. part. 1484","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Lalthanzara, H. & Ramanujam, S. N. (2014) Earthworm cast production and physico-chemical properties in two agroforestry systems of Mizoram (India). Tropical Ecology, 55, 77 - 86.","Lalthanzara, H., Ramanujam, S. N. & Jha, L. K. (2011) Population dynamics of earthworms in relation to soil physico-chemical parameters in agroforestry systems of Mizoram, India. Journal of Environmental Biology, 32, 599 - 605.","Ramanujam, S. N., Lalthanzara, H. & Jha, L. K. (2004) Biodiversity of earthworms in Mizoram. Journal of Nature Conservators, 16, 129 - 134.","Halder, K. R. (2003) Oligochaeta: Earthworm. In: State Fauna. Series 9. Fauna of Sikkim. Part 5. Zoological Survey of India, Calcutta, pp. 91 - 116.","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234.","Halder, K. R. (2000) Oligochaeta: Earthworm. In: State Fauna. Series 7. Fauna of Tripura. Part 4. Zoological Survey of India, Calcutta, pp. 239 - 236.","Chaudhuri, P. S. & Bhattacharjee, G. (1999) Earthworm resources of Tripura. Proceedings of the National Academy of Sciences, India, 69 (B), 159 - 170.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346.","Dey, A. & Chaudhuri, P. S. (2014) Earthworm community structure of pineapple (Ananas comosus) plantations under monoculture and mixed culture in West Tripura, India. Tropical Ecology, 55, 1 - 17.","Michaelsen, W. (1909) The Oligochaeta of India, Nepal, Ceylon, Burma and the Andaman Islands. Memoirs of the Indian Museum, 1, 103 - 253.","Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354."]}

46. Dichogaster saliens (Beddard, 1893) Microdrilus saliens Beddard, 1893: 683. Microdrilus asiaticus (laps.) Beddard, 1893: 706. Dichogaster (Diplothecodrilus) saliens (Beddard). Csuzdi 2010: 77 (for further synonyms). T. Undesignated (?). Types supposedly from Penang, Java and Singapore, but were collected from earth that arrived at Kew Gardens. D. Arunachal Pradesh: Taliha (Julka 1981), Chowkham (Julka 1976, 1988a), Wakro (Julka 1976, 1988a). Assam: Unspecified localities (Rajkhowa et al. 2015). Meghalaya: Mawphlang (Julka 1977), Barapani (Julka 1977, 1988a), Sumer (Julka 1988a), Tura (Julka 1988a), Mawshynrut village (Kharkongor 2018). Sikkim: Rongli (Julka 1988a), Rongli-Chu river bed (Julka 1988a), Makaibari (Julka 1988a), Rimbi (Soota & Halder 1981). West Bengal: Pashok (Stephenson 1920)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 285, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Beddard, F. E. (1893) On some new species of earthworms from various parts of the world. Proceedings of the Zoological Society of London, 1892, 666 - 706. https: // doi. org / 10.1111 / j. 1096 - 3642.1892. tb 01789. x","Csuzdi, Cs. (2010) A monograph of the paleotropical Benhamiinae earthworms (Annelida: Oliochaeta, Acanthodrilidae). Pedozoologica Hungarica, No. 6, 1 - 215.","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1976) Studies on the earthworms collected during the Daphabum Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, 69, 229 - 239.","Julka, J. M. (1988 a) The Fauna of India and the adjacent countries. Megadrile Oligochaeta (Earthworms). Haplotaxida: Lumbricina: Megascolecoidea: Octochaetidae. Zoological Survey of India, Calcutta, 400 pp.","Rajkhowa, D. J., Bhattacharyya, P. N., Sarma, A. K., and Mahanta, K. (2015) Diversity and distribution of earthworms in different soil habitats of Assam, North-East India, an Indo-Burma Biodiversity Hotspot. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 85 (2), 389 - 396. https: // doi. org / 10.1007 / s 40011 - 014 - 0380 - 1","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234.","Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261."]}

111. Perionyx pulvinatus Stephenson, 1916 Perionyx pulvinatus Stephenson, 1916: 317. T. Near Ghoom, district Darjeeling, West Bengal, India. D. West Bengal: 1 km E of Jorpokri (Julka 1975), 2 km S of D.I. Fund Rest House Jorpokri (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354."]}

99. Perionyx horai Stephenson, 1924 Perionyx horai Stephenson, 1924b: 342. T. Cantonment Hill Cherrapunji, Meghalaya, India. D. Meghalaya: Cherrapunji (Gates 1960), Domkseh village (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1924 b) On some Indian Oligochaeta, with a description of two new genera of Ocnerodrilinae. Records of the Indian Museum, 26, 317 - 365.","Gates, G. E. (1960) On Burmese earthworms of the family Megascolecidae. Bulletin of the Museum of Comparative Zoology at Harvard College, 123 (6), 201 - 282.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

120. Perionyx vidakensis Julka, 1981 Perionyx vidakensis Julka, 1981: 27. T. Vidak, district Subansiri, Arunachal Pradesh, India. D. Arunachal Pradesh: Rui (Julka 1981), Kabak (Julka 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

96. Perionyx gravelyi Stephenson, 1917 Perionyx gravelyi Stephenson, 1917: 378. T. Pashok, district Darjeeling, West Bengal, India. D. Arunachal Pradesh: Ayumuring (Julka 1981), Lingpo (Julka 1981), Kolang (Julka 1981), Parsipala (Julka 1981), Rui (Julka 1981), Vidak (Julka 1981). West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1917) On a collection of Oligochaeta from various parts of India and further India. Records of the Indian Museum, 13, 353 - 416. https: // doi. org / 10.5962 / bhl. part. 5865","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

105. Perionyx modestus Stephenson, 1922 Perionyx modestus Stephenson, 1922: 435. T. Cherrapunji, district East Khasi Hills, Meghalaya, India. D. Arunachal Pradesh: Lingpo (Julka 1981), Yame (Julka 1981), Parsipala (Julka 1981), Richik (Julka 1981), 3 km E of Richik (Julka 1981), ca. 4 km NW of Tali (Julka 1981), Rui (Julka 1981), Chowkham (Julka 1976). Meghalaya: Umsing (Julka 1977), Mawphlang (Julka 1977; Halder 1999b), Sarching (Halder 1999b), Barangapara (Halder 1999b), Tura (Halder 1999b), Rongreng Chidekgre (Halder 1999b), Williamnagar (Halder 1999b), Dumpep (Gates 1960)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1922) Some earthworms from Kashmir, Bombay, and other parts of India. Records of the Indian Museum, 24, 427 - 443.","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1976) Studies on the earthworms collected during the Daphabum Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, 69, 229 - 239.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Gates, G. E. (1960) On Burmese earthworms of the family Megascolecidae. Bulletin of the Museum of Comparative Zoology at Harvard College, 123 (6), 201 - 282."]}

69. Amynthas morrisi (Beddard, 1892) Perichaeta morrisi Beddard, 1892b: 166. Amynthas morrisi (Beddard). Blakemore 2010: 361 (for further synonyms). T. Penang, Malaysia. D. Manipur: Imphal Residency Garden (Gates 1937), Mantripukhri (Haokip & Singh 2012, 2017). Meghalaya: Lady Hydari Park Shillong (Halder 1999b), Botanical Garden Shillong (Halder 1999b), Barapani (Halder 1999b), Mauryngnang (Halder 1999b), Thadlaskein (Halder 1999b), Muktapur (Halder 1999b), Nongpoh (Halder 1999b). Sikkim: Namchi (Subedi et al. 2018b). West Bengal: Kalimpong (Gates 1937)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 289, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Beddard, F. E. (1892 b) On Some species of the genus Perichaeta (sensu stricto). Proceedings of the Zoological Society of London, 1892, 153 - 172.","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Gates, G. E. (1937) Indian earthworms. I. The genus Pheretima. Records of the Indian Museum, 39 (2), 175 - 212.","Haokip, S. L. & Singh, T. B. (2012) Diversity and distribution of earthworms in a natural reserved and disturbed tropical forest ecosystem of Imphal-West, Manipur, India. International Multidisciplinary Research Journal, 2 (2), 28 - 34.","Haokip, S. L. & Singh, T. B. (2017) Comparative studies on the earthworm community structure in the natural mixed and oak plantation sub-tropical forests ecosystem of Imphal, Manipur, India. International Journal of Ecology and Environmental Sciences, 43, 319 - 329.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Subedi, H. P., Saxena, R. M. & Reynolds, J. W. (2018 b) New records of earthworm species Amynthas morrisi, Perionyx himalayanus and Perionyx jorpokriensis (Oligochaeta; Megascolecidae) from Sikkim, India. Megadrilogica, 23, 69 - 77."]}

73. Kanchuria antrophyes (Stephenson, 1924) Megascolides antrophyes Stephenson, 1924a: 130. Kanchuria antrophyes (Stephenson). Julka 1988b: 91. T. Siju Cave, Garo Hills, Meghalaya, India. D. Meghalaya: Botanical Garden Shillong (Halder 1999b), Nayabanglow (Mishra & Ramakrishnan 1988)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 290, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1924 a) Oligochaeta of the Siju Cave, Garo Hills, Assam. Records of the Indian Museum, 26, 127 - 135.","Julka, J. M. (1988 b) On a new genus and three new species of earthworms (Megascolecidae: Oligochaeta) from northeast India. Research Bulletin (Science) Panjab University, 39, 85 - 92.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Mishra, K. C. & Ramakrishnan, P. S. (1988) Earthworm population dynamics in different jhum fallows developed after slash and burn agriculture in north-eastern India. Proceedings of the Indian Academy of Sciences, (Animal Science), 97, 309 - 318. https: // doi. org / 10.1007 / BF 03179540"]}

87. Perionyx alatus Stephenson, 1920 Perionyx alatus Stephenson, 1920: 212. T. Sitong Ridge, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 291, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261."]}

76. Kanchuria turaensis Julka, 1988 Kanchuria turaensis Julka, 1988b: 89. T. Tura, Garo Hills, Meghalaya, India. D. Meghalaya: Umjaroo (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 290, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1988 b) On a new genus and three new species of earthworms (Megascolecidae: Oligochaeta) from northeast India. Research Bulletin (Science) Panjab University, 39, 85 - 92.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}