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中国弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)
A New Species of the Sinoennea Kobelt from China (Pulmonata, Styommatophora, Streptaxidae)
范彪#,田明#,陈元晓*
点击:834次 下载:27次
DOI:
作者单位:(昆明医科大学细胞生物学与医学遗传学系,昆明650500)
中文关键字:肺螺亚纲;柄眼目;扭轴蜗牛科;弯螺属;新种
英文关键字:Pulmonata; Styommatophora; Streptaxidae; Sinoennea; new species
中文摘要:20118月在云南省泸水县进行陆生贝类调查过程中,于蛮云采集到一些弯螺属个体,经鉴定为中国弯螺属一新种,即:蛮云弯螺新种Sinoennea manyunensis sp. nov.,弯螺属的种类主要分布于东亚和南亚地区;对新种的形态特征进行了详细描述,并与近似种进行了比较、讨论。模式标本保存在昆明医科大学基础医学院细胞生物学与医学遗传学系。
英文摘要: 

The genus Sinoennea Kobelt belongs to the family Streptaxidae. Its distribution range was limited in East Asia and South Asia. The current paper reported a new species of genus Sinoennea Kobelt fromChina: Sinoennea manyunensis sp. nov. The samples were collected from Manyun town, Lushui county, (25°09'N98°08'E), Yunnan province, China in 2011. The type specimens were deposited in the Department of Cell Biology and Genetics, Kunming Medical University.

Sinoennea manyunensis sp. nov. (Plate. 1~4)

Holotype : alt.6.20 mm, diam.3.30 mm; alt of aperture2.00 mm, diam. of aperture1.00 mm; collected from Manyun town, Lushui county, (25°09'N98°08'E), Yunnan province, China, Aug 6th 2011.

Paratypes: 5 adult shells specimens, alt. 6.16~6.25 mmdiam. 2.43~3.15~3.35 mm; alt of aperture 1.90~2.10 mm, diam. of aperture. 0.94~1.15 mm, collected from Manyun town, Lushui county (25°09'N98°08'E), Yunnan province, China, Aug 6th 2011.

Etymology: The name of the new species is based on the place (Manyun town, Lushui founty) that the specimens were collected.

Shell small, thick, solid, smooth, lustrous, cylindrical. Whorls 7 1/2, moderately convex with high spiral part. Shells light yellow or yellow-brownish in colour, and with some curve vertically 68 rib-strias, but the embryonic and second without rib-stria, smooth. Apex blunt and short, with deep suture. Aperture small, ear-shaped. The peristome is thick, expanded and reflexed, on aperture dorsal lateral with neck, bell-shaped. The inner lip is close to the body whorl, with thick callus. The columellar lip slightly over umbilicus, and perfectly straight. There is a big flake-form angular lamellae at the upper right lip. There is a big nipple-flake-form teeth below. The umbilicus is narrow, slit like.

Habitat environment: It generally lives in the dark wet humus limestone mountainous and hilly regions, geomorphic environment of Karst, cliff with moss and lichen or among the stones.

The new species is remarkably similar to Sinoennea fuzhouensis Zhou, Chen and Guo, 2006, but differs from the latter by the shells with 7 1/2 whorls, (alt.5.17 mm, diam.2.57 mm;alt of aperture1.86 mm, diam. of aperture1.48 mm.) in the small size, with a big flake-form angular lamellae at inner lip, with two nipple-flake-form teeth in right lip. The upper one is bigger than the below one, axial margin does not cover the umbilicus which is wide and deep.
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国内统一连续出版物号:51-1193/Q |国际标准出版物号:1000-7083
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