Redescription of Cathaica pyrrhozona montana (Möllendorff, 1875) and description of C. zoui Wu, n. sp., from eastern China (Eupulmonata: Camaenidae)

Pub Date : 2024-03-09 DOI:10.61733/jconch/4504
Min Wu, Heng-Tao Zhang
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Abstract

Two species of Cathaica Möllendorff, 1884 are described from eastern China, C. pyrrhozona montana (Möllendorff, 1875) from Beijing and a new species, C. zoui Wu, n. sp., from Jinan, Shandong Province. The new species is conchologically similar to Cathaica fasciola (Draparnaud, 1801). The new species and C. p. montana, a subspecies of C. pyrrhozona (Philippi, 1845), the type species of Cathaica, share a similar structure of the dart-sac apparatus, in having one proximal accessory sac on the right side of dart sac, both mucous glands and the proximal accessory sac entering the dart-sac chamber. However, the distance between the dart-sac septum and the entrance of the mucous glands is distinctly shorter in the new species than that in C. p. montana. The genital anatomy of these two taxa suggests that the structure of the inside of the dart-sac apparatus deserves special attention of understanding systematics of the bradybaenine snails. In addition, the presence of dense cilia on the septum of the dart sac in the new species is newly reported for the subfamily Bradybaeninae.
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重新描述Cathaica pyrrhozona montana (Möllendorff, 1875) 和描述来自中国东部的 C. zoui Wu, n. sp.
Möllendorff, 1884)描述了产于中国东部的两个Cathaica物种,一个是产于北京的C.该新种在海螺学上类似于Cathaica fasciola (Draparnaud, 1801)。p. montana(C. pyrrhozona (Philippi, 1845) 的一个亚种)具有相似的镖囊器结构,即在镖囊右侧有一个近端附属囊,粘液腺和近端附属囊都进入镖囊室。不过,新种的镖囊隔膜与粘液腺入口之间的距离明显短于蒙大拿梭子蟹。这两个类群的生殖器解剖结构表明,镖囊器内部的结构值得特别关注,以了解水蛞蝓的系统学。此外,新种的镖囊隔膜上有密集的纤毛,这也是 Bradybaeninae 亚科的新发现。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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