Bensonella lakainguta C. - C. Hwang, 2014

Gojšina, Vukašin, Hunyadi, András, Sutcharit, Chirasak, Tongkerd, Piyoros, Auffenberg, Kurt, Grego, Jozef, Vermeulen, Jaap J., Reischütz, Alexander & Páll-Gergely, Barna, 2025, A new start? Revision of the genera Anauchen, Bensonella, Gyliotrachela and Hypselostoma (Gastropoda, Eupulmonata, Hypselostomatidae) of Southeast Asia with description of 46 new species, ZooKeys 1235, pp. 1-338 : 1-338

Bensonella lakainguta C. - C. Hwang, 2014

Figs 39 J , 61

Bensonella plicidens lakainguta Hwang, 2014: 18–19, figs 2–4.

Boysidia (Bensonella) qingliangfengensis Fang, Wang & Chen, 2015: 692, fig. 1.

Bensonella lakainguta — Páll-Gergely and White 2023: 2025–2026 , figs 7, 8, 9 e – h.

Bensonella qingliangfengensis — Páll-Gergely and White 2023: 2020, fig. 7 d – f.

Type material examined.

Taiwan • holotype; 27 Aug. 1998, C-C. Hwang leg.; NMNS - 7244-00 .

Additional material examined.

Japan • 4 shells; limestone outcrop along forest rd., upstream Ugui-gawa, Aiga, Tsuchiyama-cho , Koka , Shiga; 34°57.9108'N, 136°22.185'E; 461 m a. s. l.; Kawase, J. U. Otani leg.; coll. PGB .

Type locality.

“ TAIWAN: Mt. Zhibenzhushan, Wutai, Pingdung, 22°43'32.6"N, 120°52'50.2"E, alt. 2100 m ”.

Differential diagnosis.

This species differs from B. hooki by its more triangular shell, more pointed apex, and parietal callus adnate to the penultimate whorl (not so in B. hooki , see Páll-Gergely and White 2023). For differences from B. montawa sp. nov., B. multihami , B. plicidens , and B. spinosa sp. nov. see under those species.

Distribution.

This species is well known from Japan as well as Taiwan and China (where it is known from a synonym, B. qingliangfengensis ) ( Fang et al. 2015; Páll-Gergely and White 2023).

Remarks.

This species was originally described as a subspecies of B. plicidens . Páll-Gergely and White (2023) have shown that it is distinct as it has hooked and not blunt apertural barriers, so. B. plicidens does not inhabit Japan and Taiwan where only B. lakainguta occurs.

Figures

Figure 39. Synoptic view of the species belonging to Bensonella plicidens group A B. alycaeus sp. nov. B B. boettgeri C B. cristatissima sp. nov. D B. dha sp. nov. E B. dracula sp. nov. F B. exploda sp. nov. G B. geminounca H B. hooki I B. karoensis J B. lakainguta K B. lophiodera L B. microdentata sp. nov. M B. mirabilis sp. nov. N B. montawa sp. nov. O B. multidentata sp. nov. P B. multihami Q B. nitens sp. nov. R B. nordsiecki S B. obex sp. nov. T B. pahpetensis U B. palatotridens V B. pangmapaensis W B. paviei X B. perfecta sp. nov. Y B. plicidens Z B. sericata sp. nov. AA B. serrata sp. nov. AB B. spelaea sp. nov. AC B. spinosa sp. nov. AD B. taiyaiorum AE B. tamphathai.

Figure 61. Bensonella lakainguta, holotype (NMNS - 7244-00) A – D shell E – I enlarged apertural views (from Páll-Gergely and White 2023).