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GENUS CORBICULA MEGERLE VON MÜHLFELD, 1811 Type species: Tellina fluminalis O.F. Müller, 1774., Published as part of Bespalaya, Yulia V., Kropotin, Alexander V., Kondakov, Alexander V., Aksenova, Olga V., Gofarov, Mikhail Yu., Kim, Sang Ki, Lee, Jin Hee, Travina, Oksana V., Vikhrev, Ilya V., Vinarski, Maxim V. & Bolotov, Ivan N., 2023, A taxonomic reassessment of native and invasive species of Corbicula clams (Bivalvia: Cyrenidae) from the Russian Far East and Korea, pp. 104-126 in Zoological Journal of the Linnean Society 197 (1) on page 112, DOI: 10.1093/zoolinnean/zlac078, http://zenodo.org/record/7499536, {"references":["Muller O. F. 1774. Vermium terrestrium et fluViatilium, seu animalium infusorium, Helminthicorum, et testaceorum, non marinorum, succincta historia. vol 2: I - XXXVI, 1 - 214, 10 unnumbered pages. Havniae et Lipsiae, apud Heineck et Faber, ex officina Molleriana."]}

CORBICULA ELATIOR VON MARTENS, 1905 Corbicula elatior von Martens, 1905: 65, pl. 2, fig. 5 (Korea, Kyongsang-namdo and Kyonggi-do provinces) = Corbicula suifuensis Lindholm, 1925: 29 [Russia, Primorye Region, Suifun (nowadays Razdolnaya) River near Razdolnoye settlement] = Corbicula amurensis Bogatov & Starobogatov, 1994: 149, fig. 1D–F (Russia, Khabarovsk Region, the Lower Amur river near Balbinskiy Cliff, 22 km upstream of Kalinovka settlement and 337 km from the mouth), synon. nov. = Corbicula neƲelskoyi Bogatov & Starobogatov, 1994: 148–149, fig. 1A–C (Russia, Khabarovsk Region, the Lower Amur River near Balbinskiy Cliff, 22 km upstream of Kalinovka settlement and 337 km from the mouth), synon. nov. = Corbicula sirotskii Bogatov & Starobogatov, 1994: 149, fig. 1G–I (Russia, Khabarovsk Region, Lower Amur River, 7 km upstream of Maxim Gorky settlement and 397 km from the mouth), synon. nov. Type material: The lectotype [a pair of valves; ‘ Corbicula elatior Marts., Naktonggang’; designated by Glaubrecht et al., 2007], ZMB 55.624; paralectotypes ZMB 38.439 (ten pairs of valves, one right valve; ‘ Corbicula elatior jung, Naktonggang, mittl. Arm Korea, Gottsche’); paralectotypes ZMB 38.429 (six pairs of valves, one right valve; ‘ Corbicula No. 1, N’aktonggang, Gottsche’); paralectotypes ZMB 38.430 b (three pairs of valves, one tiny right valve; ‘ Corbicula no. 2, Imjingang bei Imjin 20/9 Gottsche’); paralectotype ZMB 55.626 (a pair of valves; specimen depicted in Fig. 6 as ‘ C. elatior ?’) (Glaubrecht et al., 2007). Type locality: ‘ Mittlerer Arm des Naktonggang, Hauptfluss der Provinz Kyöngsangdo, zwischen Tongnai und Kimhai. Imjingang bei Imjin, Provinz Kyöngkwido, Korea’; South Korea: restricted to Naktong River near Kimhae, Kyongsang-namdo (NakdongRivernearGimhae, Gyeongsangnam Prov., 35°11 ′ 57 ″ N, 128°54 ′ 00 ″ E). Locality of paralectotypes: Prov. Kyonggi-do: Imjin River near Imjin (Glaubrecht et al., 2007). Material examined: The type series. Our samples: Far East of Russia: lower reaches of the Lower Amur River near Nikolaevsk-on-Amur City, 53°7 ′ 12.948 ″ N, 140°50 ′ 47.646E ″, 17 July 2014, 28 specimens, Bolotov I.N. & Vikhrev I. V. leg. (lot nos RMBH Corb 15); Nizhnetambovskoe settlement, 16 September 2020, 50.952778N, 138.204444E, 89 specimens, Aksenova O. V., Kropotin A. V., Travina O. V. & Vinarski M. V. leg.; 61 specimens are stored in RMBH; 28 specimens from the same locality are kept in LMBI under accession number 21-044; Nizhnetambovskoe settlement, 7 July 2021, 50.921111N, 138.1775E, 23 specimens, Aksenova O. V., Kropotin A. V., Travina O. V. & Khrebtova I.S. leg.; one specimen from Razdolnaya River is kept in ZIN collection, accession number 3. Description: The shell is large, triangular, and the ventral margin is rounded (Fig. 6). The umbo issignificantly prominent and slightly offset. Sculpture is represented by well-marked deep concentric ridges; the width of the ribs and distance between them are variable in the same specimen. External shell coloration varies from dark brown, greenish brown to yellow–brown, sometimes with light or dark concentric bands. Internal shell coloration varies from matte white with pale violet marks to light purple. Hinge has a heterodont dentition type, with three cardinal teeth on each valve and two crenulated lateral teeth. Siphons conical, both narrow, with a row of short papillae. Black pigment is concentrated in rings internally at the base of both siphons and in the edge of the mantle forming the siphons. The outer surface of the siphons is white; on the inside, the siphons are bright orange. The papillae of both siphons are without dark rings. Corbicula elatior is dioecious. Differential diagnosis: This species could be distinguished from the sympatric Corbicula leana, C. f l u m i n e a a n d C. j a p o n i c a b y t h e f o l l o w i n g combination of characters: larger size, significantly prominent umbo, well-marked deep concentric ridges, external shell with light or dark concentric bands, the siphons without dark pigmentation and with short papillae. Distribution: East Asia: Amur River and the Korean Peninsula (Graf & Cummings, 2021). The records of this species in the South Primorye Region (Razdolnaya River) and China (Itunghe River) (Zatravkin & Bogatov, 1987) need to be checked. Comments: Considering that the samples from the Lower Amur River are genetically identical to the samples from the Seomjin River (South Korea) collected by Park & Kim (2003), we also analysed the original descriptions of some nominal species described from South Korea: C. producta, C. elatior, C. colorata and C. papyracea. Presumably, C. producta is a junior synonym of C. fluminea (for details, see Discussion). According to their original descriptions (Heude, 1887; von Martens, 1905), C. colorata and C. papyracea are small clams with a flattened umbo. At the same time, the specimens of Corbicula from the Lower Amur River are distinguished by a relatively large shell and prominent umbo. We were unable to find any significant conchological differences between our samples of Corbicula from the Lower Amur and the type specimens of nominal species described by Bogatov & Starobogatov (1994) (Figs 6, 7). The original morphological description of C. elatior published by von Martens (1905) (Fig. 7E) corresponds well to the morphological features of our samples from the Lower Amur River. Hence, we assume that C. elatior represents a species endemic to the Far East of Russia and the Korean Peninsula. The nominal species C. amurensis, C. neƲelskoyi and C. sirotskii are considered here junior synonyms of C. elatior., Published as part of Bespalaya, Yulia V., Kropotin, Alexander V., Kondakov, Alexander V., Aksenova, Olga V., Gofarov, Mikhail Yu., Kim, Sang Ki, Lee, Jin Hee, Travina, Oksana V., Vikhrev, Ilya V., Vinarski, Maxim V. & Bolotov, Ivan N., 2023, A taxonomic reassessment of native and invasive species of Corbicula clams (Bivalvia: Cyrenidae) from the Russian Far East and Korea, pp. 104-126 in Zoological Journal of the Linnean Society 197 (1) on pages 116-119, DOI: 10.1093/zoolinnean/zlac078, http://zenodo.org/record/7499536, {"references":["von Martens E. 1905. Koreanische Susswasser-Mollusken. Zoologische Jahrbucher Supplement 8: 23 - 70.","Lindholm WA. 1925. Ueber der Vorkommen der Gattung Corbicula in Ussuri-Gebiete. Doklady Rossiyskoi Akademii Nauk: 29 - 32.","Bogatov VV, Starobogatov YI. 1994. Genus Corbicula in the Amur River (Bivalvia, Corbiculidae). Ruthenica, Russian Malacological Journal 4: 147 - 150.","Glaubrecht M, Feher Z, Kohler F. 2007. Inventorizing an invader: annotated type catalogue of Corbiculidae Gray, 1847 (Bivalvia, Heterodonta, Veneroidea), including Old World limnic Corbicula in the Natural History Museum Berlin. Malacologia 49: 243 - 272.","Graf DL, Cummings KS. 2021. The freshaeater mussels (Unionoida) of the aeorld (and other less consequential biValVes), updated 28 May 2021. MUSSEL Project Web Site. Available at: http: // www. mussel-project. net /","Zatravkin MN, Bogatov VV. 1987. Large biValVe mollusks of the fresh and brackish aeaters of Far East of the USSR. A guide. Vladivostok: Far Eastern Branch of the Soviet Academy of Sciences.","Park JK, Kim W. 2003. Two Corbicula (Corbiculidae: Bivalvia) mitochondrial lineages are widely distributed in Asian freshwater environment. Molecular Phylogenetics and EVolution 29: 529 - 539.","Heude MP. 1887. Conchyliologie fluViatile de la proVince de Nanking [et de la Chine centrale]., Vol. 10, pl. 5, fig. 24. Paris: F. Savy."]}

CORBICULA JAPONICA PRIME, 1864 Corbicula japonica Prime, 1864: 68 (Japan, without a precise locality) = Corbicula biformis Reinhardt, 1877: 70 (Japan, ‘Jedo’ = Tokyo) = Cyrena (Corbicula) leana von Martens, 1877: 119, non Prime, 1864 (Yokohama) = Cyrena (Corbicula) transƲersa von Martens, 1877: 120 (Yokohama) = Cyrena yokohamensis G.B. Sowerby II, 1877: pl. 12, fig. 55 (Yokohama) = Corbicula oƲalis Reinhardt, 1878: 192, pl. 5, fig. 5, non Prime, 1860 (Japan) = Corbicula fuscata var. atrata Reinhardt, 1878: 191, pl. 5, fig. 4 (Japan) = Corbicula doenitziana Clessin, 1879: 197, pl. 39, fig. 4 (Japan, Yokohama) = Corbicula martensii Clessin, 1879: 196, pl. 38, figs 17, 18 (Japan, Yokohama) = Corbicula reiniana Clessin, 1879: 196, pl. 39, figs 8, 9 (Japan, Yokohama) = Corbicula sadoensis Pilsbry, 1901: 406 (Japan, Sado) H, C. elatior from the Lower Amur River (lot no. RMBH Corb 0015/1). I, longitudinal section of the siphon. J, gills. K, outgrowths on the mantle edge on the different parts of the mantle. L, section of the female gonad. M, section of the male gonad. Scale bars: 1 cm in A; 1 mm in B, F, G, J, K; 2 mm in D, E, H, I; 0.2 mm in L; 0.1 mm in M. Photographs: O.V. Aksenova. TAXONOMY OF NATIVE AND INVASIVE CLAMS 115 = Corbicula nipponensis Pilsbry, 1907: 159, pl. 7, figs 3, 4 (Japan, Kiogawaranuma, Mutsu) = Corbicula nipponensis delicata Pilsbry, 1907: 160, pl. 7, figs 11, 12 (Japan, Imaegata, Kaga) = Corbicula suifuensis var. finitima Lindholm, 1927: 552, pl. 32, fig. 2 [Russia, Primorye Region, estuary of the Mai-khé River (nowadays Artemovka)], synon. nov. = Corbicula fluminalis var. extrema Lindholm, 1927: 550 (Russia, Primorye Region, and Sakhalin Island) = Corbicula fluminea Zhadin, 1952: 317, non O.F. Müller, 1774, partim. = Corbicula lindholmi Kursalova & Starobogatov, 1971: 94 [Russia, Primorye Region, the lower course of the Pachikheza River (nowadays Kiparisovka) River)], synon. nov. Type material: Syntypes ZMB 32.198 (two pairs of valves ex coll. Gundlach; ‘ Corbicula japonica Prime, Japan, Gulick, Prime’); syntypes ZMB 170.411 (two pairs of valves ex coll. Dunker; ‘ Corbula japonica, von Mr Prime selbst erhalten’) inspected during this work. According to Glaubrecht et al. (2007), three other specimens (presumable syntypes) are kept in the Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA (not seen). Type locality: ‘ Japonia (fide Gulick) collect. Wheatley, Jay, Browne, Cooper, Lyc. Hist. Nat., Prime and Lea’ = Japan (Glaubrecht et al., 2007). Material examined: Far East of Russia: Artemovka, Kiparisovka, Razdolnaya, Partizanskaya and Kievka rivers, in total 194 specimens; IX.2020, Aksenova O. V., Bespalaya Yu. V., Kropotin A. V., Travina O. V., Vinarski M. V.leg.[lot nos RMBH Corb 54 and RMBH Corb 113–119], 43 specimens from the Razdolnaya and Artemovka rivers are kept in LMBI (accession numbers 21-043 and 21-045). Description: Shell relatively large, oval–triangular (Fig. 5). The umbo is centrally located and prominent. External shell colour varies from olive or greenish brown to black. The exterior exhibits concentric sculpture with regular ribs. Internal shell coloration matte white, with pale violet or dark purple marks in the area of the umbo. Hinge of the heterodont dentition type, with three cardinal teeth on each valve and two crenulated lateral teeth. Shell sculpture of young individuals characterized by well-marked concentric ridges and pronounced transverse stripes; shell coloration is lighter than in adults. Nacre varies from pure purple to purple with wide white marks. Siphons conical, both narrow. Inhalant siphon with a row of long papillae and with an additional row of short papillae. Black pigment is concentrated in rings internally at the base of both siphons and in the edge of the mantle forming the siphons. The outer surface of the siphons is white; on the inside, the siphons are bright orange. Larger papillae of the inhalant siphon, with dark rings. Distribution: East Asia: the Japan Sea (including some lakes and rivers near the sea), Korea, southern Sakhalin, southern Kurile Islands and the lower reaches of the Amur River (Glaubrecht et al., 2003; Yamada et al., 2014; Vinarski & Kantor, 2016)., Published as part of Bespalaya, Yulia V., Kropotin, Alexander V., Kondakov, Alexander V., Aksenova, Olga V., Gofarov, Mikhail Yu., Kim, Sang Ki, Lee, Jin Hee, Travina, Oksana V., Vikhrev, Ilya V., Vinarski, Maxim V. & Bolotov, Ivan N., 2023, A taxonomic reassessment of native and invasive species of Corbicula clams (Bivalvia: Cyrenidae) from the Russian Far East and Korea, pp. 104-126 in Zoological Journal of the Linnean Society 197 (1) on pages 112-115, DOI: 10.1093/zoolinnean/zlac078, http://zenodo.org/record/7499536, {"references":["Prime T. 1864. Notes on species of the family Corbiculadae, with figures. Annals of the Lyceum of Natural History of Neae York 8: 57 - 92.","von Martens E. 1905. Koreanische Susswasser-Mollusken. Zoologische Jahrbucher Supplement 8: 23 - 70.","Bogatov VV, Starobogatov YI. 1994. Genus Corbicula in the Amur River (Bivalvia, Corbiculidae). Ruthenica, Russian Malacological Journal 4: 147 - 150.","Reinhardt O. 1877. [Herr Reinhardt legte eine Anzahl japanischer Land und Susswassermollusken]. Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin. Jarhgang 1877: 67 - 70.","von Martens E. 1877. [Herr von Martens gab im Anschluss an den vorhergehenden Vortrag eine Uebersicht uber die von den Herren Dr. Fr. Hilgendorf und Dr. W. Donitz in Japan gesammelten Binnenmollusken]. Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin. Jarhgang: 97 - 123.","Sowerby GB II. 1877. Monograph of the genus Cyrena. In: Conchologia iconica, or illustrations of the shells of molluscous animals, Vol. 20, London: L. Reeve, pl. 1, 1 - 19 and unpaginated text.","Reinhardt O. 1878. Ueber japanische Corbicula - Arten. Jahrbucher der Deutschen Malakozoologischen Gesellschaft 5: 185 - 194.","Prime T. 1860. Descriptions of new shells from the collection of Hugh Cuming, Esq. Proceedings of the Zoological Society of London 28: 319 - 322.","Clessin S. 1879. Die Familie der Cycladeen. In: Abbildungen nach der Natur mit Beschreibungen. In: Systematisches Conchylien-Cabinet Von Martini und Chemnitz. Nurnberg: Verlag von Bauer & Raspe. S. 201 - 283, pl. 43 - 46.","Pilsbry HA. 1901. New Japanese marine, land and fresh-water Mollusca. Proceedings of the Academy of Natural Sciences of Philadelphia 53: 385 - 408.","Pilsbry HA. 1907. On Japanese species of Corbicula. Annotationes Zoologiae Japonenses 6: 153 - 160.","Lindholm WA. 1927. Zur kenntnis der Corbicula-Formen (Lamellibranchiata) Sudost-Sibiriens. Ezhegodnik Zoologicheskogo Muzeya Akademii Nauk SSSR 28: 550 - 554.","Zhadin VI. 1952. Mollusca of fresh and brackish waters of the USSR. Opredeliteli po faune SSSR, izdavaemye Zoologicheskim institutom AN SSSR. Moscoae-Leningrad: SoVetskaya Nauka, 43: 1 - 346.","Muller O. F. 1774. Vermium terrestrium et fluViatilium, seu animalium infusorium, Helminthicorum, et testaceorum, non marinorum, succincta historia. vol 2: I - XXXVI, 1 - 214, 10 unnumbered pages. Havniae et Lipsiae, apud Heineck et Faber, ex officina Molleriana.","Kursalova VI, Starobogatov YI. 1971. Mollusks of the genus Corbicula of the Antropogene of North and West Asia and Europe. In: Molluscs, trends, methods and results of their inVestigation. Fourth meeting on the Investigation of Mollus с s. Abstracts of communications. Moskva, Nauka, 93 - 96 [in Russian].","Glaubrecht M, Feher Z, Kohler F. 2007. Inventorizing an invader: annotated type catalogue of Corbiculidae Gray, 1847 (Bivalvia, Heterodonta, Veneroidea), including Old World limnic Corbicula in the Natural History Museum Berlin. Malacologia 49: 243 - 272.","Glaubrecht M, von Rintelen T, Korniushin AV. 2003. Towards a systematic revision of brooding freshwater Corbiculidae in southeast Asia (Bivalvia, Veneroida): on shell morphology, anatomy and molecular phylogenetics of endemic taxa from islands in Indonesia. Malacologica 45: 1 - 40.","Yamada M, Ishibashi R, Toyoda K, Kawamura K, Komaru A. 2014. Phylogeography of the brackish water clam Corbicula japonica around the Japanese archipelago inferred from mitochondrial COII gene sequences. Zoological Science 31: 168 - 179.","Vinarski MV, Kantor YI. 2016. Analytical catalogue of fresh and brackish aeater molluscs of Russia and adjacent countries. Moscow: A. N. Severtsov Institute of Ecology and Evolution of RAS."]}