摘要
系统整理和研究了中国弯螺属的种类，共计9种，其中一新种，即：贵阳弯螺新种Sinoenneaguiyangensissp．nov，弯螺属的种类主要分布于东亚和南亚地区：对其已发表的种类进行了整理、甄制，对新种的形态特征进行了详细描述，亦与近似种进行了比较、讨论．
The genus Sinoennea Kobelt be1ongs to faInily StrePAndae. Its distribuion range was limited in East-Asia and South-Asia. After rearrangment, the collection consists of total described as new to science. The type pecimens are kept in the Institute of Zoology, Academia Sinica.Sinoennea guiyangesis sp. nov. (Figs l. a, b, c)Holotype: Alt. 2.40 mm, diam. 1.31 mm, Alt of aperture 0.81 mm, diam. of aperture 0.49 mm,collected longjingwan twon, Guiyang City (25°6' N, 106°7'E), Guizhou Province, China, September 13,1997.Paratypes: 4 specimens, Alt. 2.31-2.50 mm, diam. 1.30-1.38 mm, alt of aperture 0.75-0.81 mm,diam. of aperture. 0.44-0.50 mm, collected with the holotype.Shell small, thick, solid, lustrous, cylindrical. Whoris 5 1/2, moderetely convex with high spiral part. Shells light yellow or light white-yellow in colour, and with regular coarse rigging, but except the protonch and second without coarse ribbing, smooth. Apex blunt, ovate, with deep suture. Aperture small, long cylindrical. The peristome thick, expanded and reflexed, with 4 teeth. 1 big flaky-form angular lamellae, two small papillare teeth in righ lip, 1 big papillary in columellar lip; The columellar lip and outer lip perfectly straight. Umbilicus wide, deep, small cavernous.The new species very closely resembles Sinoennea larvula (Heude, 1882), but differs from the latter by the shells with 5 1/2 whorls, (alt. 2.40 mm, diam. 1.31 mm) in the small size, with two small papillary teeth in right lip. The latter shell big (alt.3.50 mm, diam. 1.00 mm) and with one small wartform tooth in right lip.
出处
《贵州科学》
1998年第2期90-93,共4页
Guizhou Science
基金
国家自然科学基金
关键词
肺螺亚纲
柄眼目
扭轴蜗牛科
弯螺属
中国
Pulmonata, Styommatophora, Streptaxidae, Sinoennea, new species
