Land snail diversity in central China: revision of Laeocathaica Moellendorff, 1899 (Gastropoda, Camaenidae), with descriptions of seven new species Author Wu, Min https://orcid.org/0000-0002-5434-5544 School of Life Sciences, Nanjing University, Nanjing 210023, China minwu1969@aliyun.com Author Shen, Wang School of Life Sciences, Nanjing University, Nanjing 210023, China Author Chen, Zhong-Guang https://orcid.org/0000-0003-2689-3321 Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang 330031, China text ZooKeys 2023 2023-03-20 1154 49 147 http://dx.doi.org/10.3897/zookeys.1154.86237 journal article http://dx.doi.org/10.3897/zookeys.1154.86237 1313-2970-1154-49 4E410C2ACC03438F8AC7C5370819DE6C E4F41DD1A11059DAB4A979F00E85D50F Laeocathaica phaeomphala Moellendorff , 1899 Figs 2A , 3 , 22 , 23 , 42D , 48E, F , 51 , 52D Laeocathaica phaeomphala Moellendorff , 1899: 96, pl. 6, fig. 3; - Wiegmann 1900 : 111, pl. 3, figs 101-103; - Gude 1902 : 6; - Yen 1939 : 149, pl. 15, fig. 37; - Chen and Zhang 2004 : 325, fig. 314; - Pall-Gergely et al. 2022 : 67, fig. 18C. Laeocathaica (Laeocathaica) phaeomphala - Zilch 1968 : 174; - Richardson 1983 : 78. Museum material. SMF 9089, lectotype ; Wenhsien, S-Gansu; Potanin 51b, 72, 741, Slg. O. v. Moellendorff . SMF 9090, paratypes , four fms; the same data as lectotype. ZIN RAS No. 4, 1 fma and 1 subadult , Wen-Xian , 1885-IX-8 , coll. Potanin , det. Moellendorff . Figure 22. Laeocathaica phaeomphala Moellendorff , 1899 A SMF 9089, lectotype B SMF 9090, paratype C HBUMM05433a-spec.6. New material. HBUMM05433, 2 fma, 1 fms, and many juvs, all fma dissected; Yuxushan , Wenxian , Gansu Province , 32.957259°N , 104.689152°E , shrubs and slate, 2006-IX-27 , coll. Wu, M. , Liu, J.-M. , Zheng, W. and Gao, L.-H. HBUMM05477, numerous fma; Jidushan nearby Baishuijiang , Wenxian , Gansu Province ; limestone and broad-leaved woods; 2006-IX-27 ; coll. Wu, M. , Liu, J.-M. , Zheng, W. and Gao, L.-H. HBUMM08424, slope near Wenzhoulu [文州路], Wenxian , Gansu Province , near 32.943151°N , 104.692505°E , on slope; 2019-X-12 , coll. Li, Q.-M. ; DNA voucher HBUMM08424a. CZG202008-w3, 9 subadults , Shangdezhen , Wenxian , Gansu Province , 2020-VIII , coll. Chen, Z.-G. Figure 23. Genital anatomy of Laeocathaica phaeomphala Moellendorff , 1899, HBUMM05433a-spec.6 A general view B, C ventral and left views of dart sac apparatus. Abbreviations: AS - accessory sac; At - atrium; BCD - bursa copulatrix duct; DS - dart sac; DtC - a chamber containing love dart; Ep - epiphallus; MG - mucous glands; P - penis; PR - penial retractor muscle; PS - penial sheath; Va - vagina; VD - vas deferens. Distribution. Gansu: Wenxian (type locality). Additional information of shell. The first 11/4 protoconch whorls are almost smooth, and the subsequent 1/4 whorls have dense radially arranged fine threads. Spiral grooves are regularly present throughout body whorl. General anatomy. Head with flat but distinct eversible head wart. Jaw arcuate, with 5-7 projecting ribs. Anatomy of genital organs. Penial sheath covering ~ 1/5 of penis. Penis tubular and distally thicker. Inside penis, ~ 7 high parallel pilasters on proximal 1/2, no pilasters fusing into Y-shaped fork. Fine pilasters on distal end of penis merging into 9-12 thin or thick folds. Vas deferens narrow throughout. Vagina between atrium and dart sac extremely elongated, ~ 4 x longer than dart sac. Vagina between dart sac and insertion of bursa copulatrix duct approximately as long as dart sac. Dart sac ~ 1/6 length of penis. Love dart ~ 1.5 mm long, apically 2-bladed. Accessory sac tiny, internally empty, inserting into dart sac at middle part, opening to dart chamber. Mucous glands eight, each singly tubular or simply branched. Proximal accessory sac absent. Bursa copulatrix duct equally thick. Remarks. This species is one of the three species that do not have proximal accessory sac on dart sac apparatus. However, the shell morphology of Laeocathaica phaeomphala differs greatly from that of the other two species L. polytyla and L. tropidorhaphe .