Anauchen rochebruni (Mabille, 1887), 2023

Anauchen rochebruni (Mabille, 1887)

Figs 10 O View Figure 10 , 30 View Figure 30 , 31 View Figure 31 , 37 View Figure 37 , 38 View Figure 38

Hypselostoma rochebruni Mabille, 1887 a: 8 View in CoL .

Pupa angulina Gredler, 1885: 7 . syn. nov.

Hypselostoma rochebruni View in CoL — Mabille 1887 b: 121–122.

Boysidia gereti Bavay & Dautzenberg, 1904: 212, pl. 9, figs 5–8. View in CoL

Hypselostoma rochebrunei [sic] — Fischer and Dautzenberg 1904: 408.

Anauchen angulinus — Pilsbry 1917: 191, pl. 33, figs 5, 6.

Anauchen rochebruni — Pilsbry 1917: 190–191; Páll-Gergely 2023 a: 63, 67, figs 1 A, B.

Anauchen gereti — Pilsbry 1917: 189–190, pl. 33, figs 1–3; Schileyko 1998: 138, fig. 158; Schileyko 2011: 4.

Hypselostoma rochebruni View in CoL — Schileyko 2011: 3.

Boysidia gereti View in CoL — Páll-Gergely 2023 a: 67, fig. 1 A.

Type material examined.

Vietnam • 1 syntype of A. rochebruni ; from the type locality; collector unknown; MNHN -IM-2000-35156 • 1 syntype of B. gereti ; from the type locality; C. Messager leg.; MNHN -IM-2000-35161 .

Additional material examined.

Vietnam • 59 shells; Lang Son Province, Binh Gia, eastern edge of the village, Di Chi Keo Leng , rock wall; 21°56.302'N, 106°23.819'E; 375 m a. s. l.; 17 Feb. 2020; A. Hunyadi leg.; coll. HA GoogleMaps • 55 shells; Lang Son Province, Bac Son district, Quinh Son , northern part of the village; 21°53.411'N, 106°20.944'E; 400 m a. s. l.; 18 Feb. 2020; A. Hunyadi leg.; coll. HA GoogleMaps • 31 shells; Lang Son Province, Bac Son district, Quinh Son , northeastern part of the village, rock wall; 21°54.616'N, 106°20.542'E; 420 m a. s. l.; 18 Feb. 2020; A. Hunyadi leg.; coll. HA GoogleMaps • 25 shells; Lang Son Province, Bac Son district, Long Dong , 3.8 km north from junction of roads 1 B and 241; 21°56.728'N, 106°19.447'E; 390 m a. s. l.; 18 Feb. 2020; A. Hunyadi leg.; coll. HA GoogleMaps • 4 shells; Lang Son, vicinity of Chua Tam Than ; 21°51.353'N, 106°44.809'E; 265 m a. s. l.; 21 Feb. 2020; A. Hunyadi leg.; coll. HA GoogleMaps • 1 shell; Ha Giang Province, Ha Giang 105.5 km - Đong Van, Xa Van Chai , left side of the road; 23°09.084'N, 105°10.774'E; 31. May 2012; A. Hunyadi leg.; coll. HA GoogleMaps • 1 shell; Cao Bang Province, Đong Khe 3 km- Đeo Lung Phay , right side of the road; 22°24.223'N, 106°25.937'E; 390 m a. s. l.; 15 Nov. 2011, A. Hunyadi leg.; coll. HA GoogleMaps • 1 shell; Cao Ban Province, Tring Khanh district, Canh Tien commune, Pac Rao village ; 22°48.9408'N, 106°30.549'E; 544 m a. s. l.; L. V. Hao, T. Ishibe, Y. Nakahara, K. Ohara, K. Okubo, J. U. Otani, V. P. Sang leg.; coll. PGB GoogleMaps . • 5 shells; Bac Kan Province, Na Ri district , 2 km S of Ban Dem, W slopes of a deep sinkhole covered with forest, in small cavern, in dense rainforest; 06 Apr. 2012; J. Grego, J. Šteffek leg.; coll. JG . China • 2 shells; Hunan; ex. coll. Mollendorff; SMF 42108 About SMF • 2 shells; Guangxi, Laibin Shi, Wuxuan Xian, Wuxuan Tongling Zhen str., north of Yagangcun , rocks; 23°29.827'N, 109°38.534'E; 100 m a. s. l.; 21 Sept. 2013; A. Hunyadi & M. Szekeres leg. GoogleMaps • 17 shells; Guangxi, Hechi Shi, Bama Yaozu Zizhixian, southern edge of Jiaolecun ; 24°07.045'N, 107°07.847'E; 590 m a. s. l.; 10 Sept. 2013; A. Hunyadi & M. Szekeres leg. GoogleMaps • 1 shell; Guangxi, Yulin Shi, Xingye Xian, 2 km southeast frim Chenghuang , Lufengshan Scenic Area ; 22°36.814'N, 109°45.457'E; 05 Oct. 2009; A. Hunyadi leg.; coll. HA GoogleMaps • 147 shells; Guangxi, Chongzuo Shi, Longzhou Xian, north of Lenglei , Nonggang Nat. Res. , northern edge; 22°29.161'N, 106°57.357'E; 220 m a. s. l.; 23 Sept. 2013; A. Hunyadi & M. Szekeres leg.; coll. HA GoogleMaps • 2 shells; Hunan, coll. Moellendorff; SMF 42108 About SMF ; • 2 shells; Guangxi, Chongzuo Shi, 25 km southeast from the centre of Chongzuo, Chongzuo Shengtai Gongyuan , Langur Reserve ; 22°16.293'N, 107°30.359'E; 220 m a. s. l.; 18 Oct. 2009; A. Hunyadi leg.; coll. HA GoogleMaps • 51 shells; Guangxi, Chongzuo Shi, Longzhou Xian, Wude Xiang , Banxintun ; 22°35.239'N, 106°46.096'E; 350 m a. s. l.; 24 Sept. 2013; A. Hunyadi leg.; coll. HA GoogleMaps • 7 shells; Tao cun, Tong’anzhen, Pinglexian , Guangxi Zhuangzu Zizhiqu ; 24°34.379'N, 110°56.022'E; 163 m a. s. l.; leg. K. Ohara, K. Okubo, J. U. Otani; coll. PGB GoogleMaps .

Type localities.

“ Tonkin ” ( Vietnam) ( A. rochebruni ); “ Die nähere Heimat dieses Findelkindes von einer Windelschnecke ist nach obigem vorläufig nimmer wohl festzustellen; doch sicher im Innern des centralen China, in Hunan oder Hupé zu suchen. ” [type locality questionable: Hunan or Hubei provinces, China] ( A. angulinus ).

Differential diagnosis.

The shell shape is most similar to A. messageri . However, it differs by the much weaker and fewer apertural barriers. Anauchen pentadens is less triangular, has a narrower umbilicus, lacks the spiral striation, has more apertural barriers which are also stronger and has strong ribs on the last whorl (especially near the aperture). Anauchen jokaii sp. nov. lacks the spiral striation and has its last whorl keeled at the base which separates it from A. rochebruni . The apertural barriers are also much weaker in A. rochebruni . See also under A. turritus sp. nov.

Distribution.

This species has a wide distribution extending from the Hunan province, China (type locality of A. angulinus ) south to Lang Son province, Vietnam.

Remarks.

Anauchen angulinus is herein treated a synonym of this species because we observed no significant morphological differences between them.

There is intraspecific variation in the number of apertural barriers. There are usually three (parietal, palatal, columellar) but there can be as few as one (parietal). The last whorl can be more or less swollen, sometimes resulting in a strongly triangular shell shape.