贵州省鼠耳蝠属一新纪录——狭耳鼠耳蝠

A New Record of Myotis blythii in Guizhou Province

2010年10月在贵州省荔波县进行翼手目动物调查过程中,于荔波县洞塘乡捕获14只鼠耳蝠,经鉴定为狭耳鼠耳蝠Myotisblythii。主要鉴别特征:体型中等,前臂长64.60(60.78～67.72)mm(n=14,SD=1.71);耳狭长;耳屏直而细长,顶端尖锐;第三指最长、第五指最短;后足长约为胫长之半;无距缘膜;尾长67.99(60.56～73.82)mm(n=14,SD=3.7);雄性个体无阴茎骨,阴茎长12.58(8.42～15.72)mm(n=5,SD=2.86);颅全长24.09(23.48～24.72)mm(n=6,SD=0.55);头骨窄长;听泡发达;矢状脊较低;上颌内门齿有1个主尖和1个小附尖,外门齿小,与上犬齿分离;第2上前臼齿(P3)稍位于齿列内侧。此种鼠耳蝠为贵州省翼手目新纪录。

During the survey on bats for specimen collection in October,2010 at Libo county,Guizhou province,14 specimen of Vespertilionidae were collected at Dongtang township.We identified them as lesser mouse-eared mared myotis Myotis blythii.Description as follows：medium size,the forearm length is 64.60（60.78~67.72） mm（n=14,SD=1.71）;ears long and narrow;tragus straight and slender,its apex sharp;fifth finger shortest,third longest;length of hind foot about half of tibia length;calcar unkeeled;the tail length is 67.99（60.56~73.82） mm（n=14,SD=3.7）;Male specimens had no penis bone.Penis length was 12.58（8.42~15.72） mm（n=5,SD=2.86）;Greatest length of skull is 24.09（23.48~24.72） mm（n=6,SD=0.55）;skull narrow;auditory bullae developed;sagittal crest extenuated;upper inner incisor have a main cusp and a small style;outer incisor small,separated from canine by small diastema;small premolar（P3） in upper jaw leans to inner side of toothrow.Myotis blythii is a new record of bat species in Guizhou.