Erhaia sugurensis Nesemann, Shah & Tachamo, 2007

Gittenberger, Edmund, Leda, Pema, Wangchuk, Jigme, Gyeltshen, Choki & Bjoern Stelbrink,, 2020, The genera Erhaia and Tricula (Gastropoda, Rissooidea, Amnicolidae and Pomatiopsidae) in Bhutan and elsewhere in the eastern Himalaya, ZooKeys 929, pp. 1-17 : 6-8

Erhaia sugurensis Nesemann, Shah & Tachamo, 2007 Fig. 10

Erhaia sugurensis Nesemann, Shah & Tachamo, 2007, in Nesemann et al. 2007: 65 ("Nepal, Central Zone, Lalitpur District, Godawari, upper reaches of Sugure Khola forrest stream, elevation of 1700 m a.s.l.").

Shell.

According to Nesemann et al. (2007: 65) the shells are 1.6-1.9 mm high, with 3½ whorls that are "not convex", the aperture is "rounded, widened and enlarged, the inner and outer lip is thickened". The species is said to differ most conspicuously by "the separation of the last half whorl from the shell".

Material examined

(photo only). Holotype. (NHMW 104172).

Discussion.

A flaring final half of the body whorl, though not as extreme as in the holotype of E. sugurensis , may also occur as an individual variation in E. nainitalensis and the width of the umbilical chink may vary, as is shown by Davis and Rao (1997: 277, figs 2A-F).

Notes.

Erhaia sugurensis occurs sympatrically with E. banepaensis at the type locality.

Figures

Figures 2 - 10. Erhaia jannei sp. nov., holotype (2 H 2.25 mm) and paratype (3 H 2.02 mm). Bhutan, district Thimphu, W of Geneykha, brooklet with water powered prayer wheel, 2750 m a. s. l. Photos by J. Goud Erhaia pelkiae sp. nov., holotype (4 H 1.86 mm) and paratype (5 H 1.86 mm). Bhutan, district Thimphu, W of Geneykha, brooklet with water powered prayer wheel, 2750 m a. s. l. Photos by J. Goud Erhaia wangchuki Gittenberger, Sherub & Stelbrink, 2017. Shells from the type locality (6 H 1.98 mm) (7 H 2.03 mm); NBCB 1072. Bhutan, district Wangdue Phodrang, Gangchhu, Gangzetem brooklet, 2883 m a. s. l. Photos by J. Goud 8 Erhaia banepaensis Nesemann & S. Sharma, 2007, holotype (H 1.95 mm); NHMW 103319. Nepal, Central Zone, Kavre district, small forest stream, left tributary of the Chandeswari Khola upstream from Chandeshwari at Banepa. NHMW 9 Erhaia nainitalensis Davis & Rao, 1997, holotype of E. chandeshwariensis Nesemann & S. Sharma, 2007 (H 1.94 mm); NHMW 103315. Nepal, Central Zone, Kavre district, small forest stream, left tributary of the Chandeswari Khola upstream from Chandeshwari at Banepa. NHMW 10 Erhaia sugurensis Nesemann, Shah & Tachamo, 2007, holotype (H 1.95 mm); NHMW 104172. Nepal, Central Zone, Lalitpur district, Godawari, upper reaches of Sugure Khola forest stream, 1700 m a. s. l. NHMW.