A New and Endemic Sinistral Satsuma Land Snail (Pulmonata: Camaenidae) from South Taiwan

臺灣產南亞蝸牛科栗蝸牛屬一左旋新種：壽峠左旋栗蝸牛

吳書平(Shu-Ping Wu) ； 吳芷辰(Chih-Chen Wu)

《貝類學報》 40期 (2017/01) Pp. 27-42

摘要

In this article, the authors established a new sinistral species of camaenid land snail, Satsuma mimiwui sp. nov.. This newly-described species is distributed throughout southern Taiwan. It is of medium size, dark festucine to red brown in shell color, with semi-arboreal, and herbivorous ecological habits. The newly-described species can be distinguished from four other sinistral congenera and similar species, S. pekanensis, S. rubrolaeva, S. wenshini and S. contraria, which are distributed throughout southern and eastern Taiwan, by anatomical traits, morphological characters, and biogeographical distribution. A unique characteristic of this newly-described species is the autotomous behavior with subsequent self-regeneration at the posterior part of their gastropod muscle.

關鍵字

Camaenidae ； sinistral ； new species ； Satsuma mimiwui ； autotomous behavior

並列摘要

本文描述一種分布於臺灣南部恆春半島的新種左旋栗蝸牛，中文名以壽峠左旋栗蝸牛稱之。本種為臺灣特有種，殼體深棕色至暗紅褐色，體型中型、植食性、半樹棲，分布於屏東縣恆春半島北端與東側；本種與臺灣其他左旋栗蝸牛具有外部形態、生殖器結構、地理分布不重疊等特徵差異，且本種具有自割腹足與再生之特殊生態習性，在臺灣的南亞蝸牛物種中屬首次發現與報導。

並列關鍵字

南亞蝸牛科 ； 左旋 ； 新種 ； 壽峠左旋栗蝸牛 ； 自割