【摘要】 整理江西岩溶地貌陆生贝类标本时,经比对鉴定发现一新种,即石钟山弯螺Sinoennea shizhongshanensis sp.nov.,隶属肺螺亚纲柄眼目扭轴蜗牛科弯螺属。对新种形态特征和栖息环境进行了详细描述,用扫描电镜观察了新种齿舌的细微结构,并与其近似种进行了比较和讨论。更多还原

【Abstract】 This paper reports a new species of genus Sinoennea Kobelt in China: Sinoennea shizhongshanensis sp. nov.The morphological characteristics of the new species were described in detail,and radula was observed with scanning electron microscope. The new species was compared and discussed with related species. The materials were collected from Shizhongshan scenic spot,Hukou county,Jiangxi province of China in 2013. The type specimens had been deposited in the College of Life Science and Food Engineering,Nanchang University,Nanchang,China,and the Institute of Zoology,Chinese Academy of Sciences,Beijing,China.Sinoennea shizhongshanensis sp. nov.( Plate,1 ~ 5)Holotype,alt. 5. 50 mm,diam. 2. 50 mm; alt. of aperture 1. 90 mm,diam. of aperture 1. 40 mm; collected from Shizhongshan scenic spot,Hukou county( 29°44. 764’N,116°13. 082’E),Jiujiang city,Jiangxi province,China,May 20,2013.Paratypes,25 specimens,alt. 5. 20~ 6. 00 mm,diam. 2. 50~ 2. 70 mm; alt. of aperture 1. 70~ 2. 00 mm,diam. of aperture1. 40~ 1. 70 mm. Collected from Shizhongshan scenic spot,Hukou county,Jiujiang city,Jiangxi province,China,May 20,2013.Shell small,thick,solid,lustrous,smooth,ovate-cylindrical. Apex blunt and short,shells light yellow or yellow-brownish in colour,with deep suture. Whorls 8,moderately convex with high spiral part. Top two whorls smooth,following ones with some curve vertically rib-striae. The last whorl is not inflated,it gradually narrowed and lessened near aperture,with 33rib-striae. Aperture small,heart-shaped. The peristome thick,expanded and reflexed,with 1 big,right bending,flakeform angular lamellae at inner lip,with two nipple-formed teeth in outer lip,connected from shallow to deep which were hard to distinguish. Slightly deep at the bottom of the aperture,there is a big lump-form palatal tooth along the palate with a slender pleat above it. The columellar lip and outer lip are perfectly straight. Umbilicus wide,deep,cavernous.Radula( Plate,6~ 7). Teeth arranged in anteriorly V-shaped rows,each row containing 27 ~ 29 teeth with the formula( 13-14)-1-(13-14); central tooth small,sharp,triangular with pointed cusp; lateral and marginal teeth undifferentiated,unicuspid and lanceolate; lateral teeth gradually reduced in length and size,outer teeth much smaller and shorter than inner teeth.Habitat. Usually live in dark and damp limestone mountains and foothills with many humus,often perched under broadleaved forest,loose and fertile soil,limestone cliff surface or crevices.Etymology. The name of the new species is based on the type locality Shizhongshan scenic spot,Hukou county.更多还原