中国树鼩的分类研究

TAXONOMIC RESEARCH ON BURMA CHINESE TREE SHREW,Tupaia belangeri(Wagner),FROM SOUTHERN CHINA

本文对中国南部和西南部树鼩的分类问题进行了整理。讨论了中南半岛树鼩的种级分类,提出了中南半岛北部地区的Tupaia belangeri及其近似亚种应恢复其种级分类地位;T.belangeri yunalis,T.belangeri tonquinia和T.belangeri modesta应是3个有效亚种;记述了分布于中国南部和西南部的树鼩为6个亚种,其中有两个新亚种T.belangeri gongshanensis subsp.nov.(云南高黎贡山地区)T.belangeri yaoshanensis subsp.nov.(广西瑶山)。

This paper expreses a classification arrangement of the Burma-Chinese tree shrew obtained from southern China.Based difference on materials from observations of the numbers of chromosomes(2n=62),the pattern of mammary glands(3-3=6),the immunological effects,and the serum cholesterol levels with Tupaia glis,the author assums that Burma-Chinese tree shrew,Tupaia belangeri(Wagner),is a valid species.Based difference on the size,the shape of molars,and the form of tail,T.b.tonquinia(Tonkin,Viet Nam),T,b,yunalis(south,Yunnan)and T.b,modesta(Hainan Island)are three valid subspecies.Six subspecies of Burma-Chinese tree shrew are distributed in southern china.1.Tupaia belangeri chinensis Anderson,(west,southwest,and north Yunnan and southwest Sichuan)2.Tupaia belangeri gaoligongenses subsp.nov.(Mt.Gaoligong,northwest Yunnan)3.Tupaia belangeri modesta Howell,(Hainan Island)4.Tupaia belangeri tonquinia Thomas,(southwest Guangxi and Tonkin Viet Nam)5.Tupaia belangeri yunalis Thomas,(south Yunnan and southwest Guizhou).6.Tupaia belangeri yaoshanensis subsp.nov.(Yao shan,northeast Guangxi)Among them.two new subspecies are described as the following:A.Tupaia belangeri gaoligongensis subsp.nov.Holotypc:No.KIZ 73988,male(ad.),collected on January 18,1974,from Hpimaw(26°N.,98°38’E.)Lushui Co.west Yunnan(alt.1900m)Allotype:No.KIZ 74010,female(ad.)collected on January 19,1974,from the same locality as the holotype.Specimens examined:7 males,3 females,1 male(subad.),6 skins(no skull),collected from Hpimaw,and Yao jiaping,Lushui Co.,and Drung valley,Gongshan Co.northwest Yunnan.The types and the other specimens examined are kept in the Kunming Institute of Zoology(KIZ),Academia Sinica.Diagnosis This new subspecies is similar in size to that of T.b.assame-nsis,but differs from the latter by longer tail,the length of tail is more than that of head and body,by the distinct brown shoulder stripe,by the dark olive yellow on back of the body,by the darker colour on back than on flank,and by the cream-yellow colour on throat and mid-ventral region.It differs from its southern neighbour,T.b.chinensis,by smeller size,by the gray-white shoulder stripe,by the uniform grizzed olivaceous grey on the upperparts,by the graywhite on ventral,and by the length of tail equal to that of head and body in the latter.Distribution Mt Gaoligong area(26°-28°20’N.,98°10’-98°50’E.),northwest Yunnan.B.Tupaia belangeri yaoshanensis subsp.nov.Holotype:No.KIZ 122,male(ad.),collected on October 9,1985,from loxiang(23°80/N.,110°25’E.),Jinxiu Yao Aut.Co.,Guangxi.alt.1000m.Allotype:No.KIZ 117,female(ad.),collected on October 7,1985,from the same locality as the holotype.Specimens examined:4 males,3 females and 1 male(subad.)collected from the same locality as the holotype;9(ad.)collected from Yao shan,Guangxi(The latter are shih’s specimens,which are kept in Biological Department of Zhongshan University,Canton).The types and the other specimens examined are kept in Kunming Institute of Zoology,Academia Sinica.Diagnosis This new subspecies is the biggest in size among T.belangeri,total length of skull 52.2±0.3(51.0-54.6).It is even duller in colour with brown-red washing over the back,rump and flank;The colour of cheek is ochraceous;Center area of the underpart is orange-buff|The shoulder stripe is ochracsous and distinct;The length of tail equals or a little bit shorter than that of head and body.Distribution Yao shan area,northeast Guangxi.