Euphthiracarus medogensis Liu, Wu & Chen, 2012, sp. nov

Euphthiracarus medogensis sp. nov. (Figs. 4���6) Material examined: Holotype: adult (in alcohol), China: Tibet, M��dog County (29 �� 19 ' 31.07 "N, 95 �� 19 ' 59.51 "E), from litter, 1800 m a.s.l., 20 Jan., 1983, leg. Yin-Heng Han. Etymology. The new specific name ��� medogensis ��� refers to the type locality, M��dog. Measurements: Holotype: Prodorsum: length 336, width 238, height 125, setae: ss 135, ro 130, in 165, le 115, ex 30, distance between setae: ro���ro 62, in���in 120, le���le 60, in���le 90, le���ro 60; notogaster: length 665, width 410, height 402; setae: c 1 125, c 2 127, c 3 115, c p 115, d 1 100, d 2 100, e 1 125, e 2 105, h 1 135, h 2 115, h 3 95, ps 1 140, ps 2 117, ps 3 102; distance between setae: c 1 ���d 1 185, d 1 ���e 1 170, e 1 ���h 1 167, h 1 ���ps 1 115; ventral region: genitoaggenital plate 250 �� 115, anoadanal plate 320 �� 90. Colour yellowish. Surface of body covered with dense and small foveolae, except notogaster with large foveolae and lateral region of prodorsum smooth. Prodorsum with two parallel lateral carinae on each side, upper carina stronger than lower one; sensilla bacilliform, sparsely barbed in distal half; interlamellar and lamellar setae erect, covered with small and sparse spines in distal half; rostral setae thin, smooth and long, flagellate and bent distally; comparative length: in>ss > ro > le>ex. Notogaster setae relatively short, similar in shape to interlamellar setae, sparsely barbed in distal half; setae c 1���3 remote from anterior border, setae c 1 slightly more so than setae c 2 and c 3; vestigial setae f 1 located anteriorly of setae h 1; arrangement of opisthosomal glands and lyrifissures typical for genus. Genital plates each with nine setae, g 1���3 short and fine, located in progenital position, posterior four genital setae longer and thicker, spiniform; two pairs of aggenital setae present, spiniform, nearly equally thick, ag 2 about 1.5 times as long as ag 1; setae an 1 and an 2 smooth and flagellate at distal end, setae an 3 and adanal setae shorter, robust and covered with small and sparse spines in distal half; lyrifissures iad situated between setae an 3 and ad 3. Setae h of mentum longer than distance between them; palps three-segmented with setal formula: 2 - 2-8 (1); chaetotaxy of legs (without tarsi): I: 1-2 - 4 (2)- 5 (1); II: 1-3 - 3 (1)- 5 (1), III: 2 - 2 - 2 (1)- 2 (1), IV: 2 - 1 - 1 (1)- 2 (1); all legs heterotridactylous. Distribution. Known only from the type locality. Remark. This new species is similar to E macrorostralis sp. nov., E. cribrarius and E. foveolatus Aoki, 1980. It can be easily distinguished from E. macrorostralis sp. nov. by foveolate surface, and rostral setae flagellate, not thicker than all other prodosal and notogastral setae. The new species differs from E. cribrarius by following characters: surface of body covered with dense foveolae; posterior four genital setae longer and thicker; rostral setae thin, smooth and longer. The new species can be easily distinguished from E. foveolatus by following characters: rostral setae thin, smooth and long, flagellate and bent distally; ag 2 longer than ag 1.
Published as part of Liu, Dong, Wu, Donghui & Chen, Jun, 2012, Six new species of the genus Euphthiracarus (Acari: Oribatida: Euphthiracaridae) from China, pp. 47-59 in Zootaxa 3481 on pages 49-51, DOI: 10.5281/zenodo.211663
{"references":["Aoki, J. (1980) A revision of the oribatid mites of Japan. II. The family Euphthiracaridae. Acta Arachnologica, 39 (1), 9 - 24."]}