Bensonella plicidens

Bensonella plicidens (Benson, 1849) Figs 39 Y, 86 Pupa plicidens Benson, 1849: 126. Pupa plicidens — Küster 1852: 136, pl. 17, figs 23, 24. Boysidia plicidens — Pfeiffer 1853: 553; Hanley and Theobald 1874: pl. 100, fig. 8; Sowerby 1876: pl. 16, fig. 151; Ancey 1881: 373; Gude 1914: 294. Vertigo (Odontocyclas) plicidens — Adams and Adams 1858: 173. Pupa (Scopelophila) plicidens — Albers and Martens 1860: 296. Pupa (Odontocyclas) plicidens — Pfeiffer 1879: 350. Bifidaria (Bensonella) plicidens — Pilsbry and Vanatta 1900: 591. Bifidaria (Bensonella) landurensis [sic] Pilsbry, 1915: 73. Boysidia landurensis — Pilsbry 1917: 204, pl. 35, fig. 9. Paraboysidia landourensis — van Benthem Jutting 1950: 39. Boysidia (Bensonella) plicidens — Chen and Zhang 2002: 693; Zhang et al. 2014: 572. Bensonella plicidens — Hwang 2014: 17–20 (partim: fig. 5 shows B. plicidens); Páll-Gergely and White 2023: 2018–2023, figs 3 a – e, 4, 5, 9 a, b. Bensonella landourensis and plicidens — Budha and Backeljau 2017. (partim: figs 2 B, 3, 5 A, F show B. plicidens). Type material examined. India • lectotype; R. McAndrew coll. (ex. W. H. Benson coll.); UMZC I. 103325. Type locality. “ ad Landour et Moussoorie, montibus Himalayanis ”. Differential diagnosis. This species is similar to B. lakainguta, B. multihami, and B. hooki, but differs from all by the presence of spiral striation on the shell and absence of hooked apertural barriers. Bensonella karoensis is also not spirally striated, is more ovoid with a blunter apex and shallower suture. See also under B. spinosa sp. nov. Distribution. SW and SE Himalaya.