中国喇叭螺属一新种记述(肺螺亚纲,柄眼目,虹蛹螺科)

记述采自贵州省陆生贝类1新种,巩尧山喇叭螺Boysidia(Boysidia)gongyaoshanensis sp.nov.,文中对新种形态特征、栖息环境进行了描述,并对其相似种进行了分析和讨论。

A NEW SPECIES OF THE GENUS BOYSIDIA (ANCEY, 1881 ) FROM CHINA (PULMONATA, STYLOMMATOPHORA, PUPILLIDAE)

In the present paper a new species of land snail is described.T he materials were collected by the authors in Xinyi County,Guizhou Province,China,Oct.2005.T ype specimens are deposited in the Institute of Zoology,Chinese Academy of Sciences,China.Boysidia(Boysidia) gongyaoshanensis sp.nov.(Figs 1-3) Holotype.Height 2.30 mm,diameter 2.00 mm,aperture height 0.80 mm,diameter of shell 0.85 mm,collected from Gongyao Hill,Xingyi County(25°N,104°08’E),Guizhou Province,China,3 Oct.2005.Paratypes 38 specimens.Height 2.10-2.40 mm,diameter 1.97-2.10 mm,aperture height 0.78 0.84 mm,diameter of shell 0.82-0.87 mm,collected from Gongyao Hill,W anfang,Xingyi County(25°N,104°08’E),Guizhou Province,China,3 Oct.2005.Etymology.T he name of the new species refers type locality adjective.Shell small,thick,lustrous,conic.W horls 4 21,moderately convex,spire depressed-conical,embryo-whorls(1-2) smooth,the body whorl very inflated.Shell yellowish in colour,regularly and weakly striatulate,silk.Apex blunt,suture deep.Aperture rounded-oval,peristome reflected,well expanded,continuous,with 6 lamellae and folds:1 large stout,nipple-formed angular lamellae,1 big flake-formed parietal lamellae,1 bigger nipple-formed columellar lamellae,1 small nipple-formed basal fold,1 small nipple-formed upper palatal fold,and 1 small suprapalatal fold.Umbilicus big,with hole-formed.Remarks.T he new species resembles Boysidia(Boysidia) huangguoshuensis Luo et Chen,2000,but in the latter the shell is bigger(height 3.17 mm,diameter 2.20 mm;aperture of height 1.22 mm,aperture of diameter 1.06 mm),with whorls 5 12,4 folds,angular and parietal lamellae united into 1 big lobed lamella Habitat.T he animals live on limestone walls,love habitat as on surface of limestone,locality of moist,bryophyte and lichen or lives on chink of orck,under fallen leaves and rotten branch.