猪尾鼠的分类、分布与分化  

TAXONOMY, DISTRIBUTION AND DIFFERENTIATION ON TYPHLOMYS CINEREUS(PLATACANTHOMYIDAE,MAMMALIA)

作　　者：王应祥[1] 李崇云[1] 陈志平[1] 

机构地区：[1]中国科学院昆明动物研究所

出　　处：《兽类学报》1996年第1期54-66,共13页Acta Theriologica Sinica

基　　金：中国科学院"八五"重点项目;"西南武陵山区生物资源考察与评价"资助;分类区系特别支持费"滇东高原兽类分类区系研究"资助

摘　　要：本文对猪尾鼠（Ｔｙｐｈｌｏｍｐｓｃｉｎｅｒｅｕｓ）的亚种分化、分布和亚种间的相互关系作了研究。它被划分为５个亚种．其中，分布于长江流域中上游一带的猪尾鼠为一新亚种（大娄山亚种，Ｔ．ｃ．ｄａｌｏｕｓｈａｎｅｎｓｉｓ），以脑颅较隆突、眶间较窄、鼻骨后缘止于颌额缝之前为其特征；广西珠江以南的猪尾鼠为另一新亚种（广西亚种，Ｔ．ｃ．ｇｕａｎｇｘｉｅｎｓｉｓ），以腹面污黄色，脑颅高隆而宽阔为其特征。通过对２２个可数性状和测量性状的聚类分析，结果表明：５个亚种可分为两组，其中，越南北部的沙巴亚种和广西南部的广西亚种为一组，性状相对特化；长江流域的大娄山亚种、云南的景东亚种和华东地区的指名亚种为另一组，性状相对原始。后一亚种组小，大娄山亚种和景东亚种有较多的相似性，关系比较密切，指名亚种保有较多的原始特征。猪尾鼠起源于更新世早期，起源地可能是华南大陆。现今的猪尾鼠在我国长江流域及其以南地区的分布几乎是连续的，向北可分布到秦岭南坡和甘肃南部，向酉到滇中哀牢山。江河的阻隔和地带性环境气候的差异和变化可能是导致猪尾鼠亚种分化的主要原因。Chinese pysmy dormouse (Typhlomy s cinereus Milne-Edwards) is a rare and specific montane forest dormouse in southern China and nortern Vietnam. This paper deals with a taxonomic review, distribution and differentiation for it. It is divided into five available subspecies, Among them, two are new subspecies. These subspecies are given as follows:1. T. c. cinereus Milne-Edwards is distributed in northern Fujian and Zhejiang, southern Anhui, China.2. T. c. jindongensis Wu et Wang is distributed in Mt. Ailao, Jindong Yunnan ) China.3. T. c. chapensis Osgood is distrbuted in Chapa, and Lo-Qui-Ho, Tonkin, northern Vietnam. 4. Typholmys cinereusdaoloushanensis Wang et Li subsp. nov.Holotype: KIZ 88204 , female (ad. ), collected on Nov. 6, 1988, from Mt. Jingfu (107°10' E, 29°02'N), Nanchuan co., soutern Sichuan, alt. 2 000 m.Paratypes: KIZ 88208, male (ad. ), collected date and locality are the same as the liJlutype 1 KIZ 88776, female (ad' ), collected Jan. 8, 1989, from Kuanko stream forest area (107°15' E, 27°581 N), Suiysng co., northern Guizhou' aft' 1 600 nl'Specimens examined: 36 females , 17 males, collected from the same locality as tlolot u'pe and paratype, other collected from western Hubei, southern Shaanxi and Gansu. The types and most specimens examined are kept at the Kunming ins titute of Zoology, Chinese Academy of Sciences, Kunming.Diagnosis: This subspecies is simillar to T. c. phapenris of northern Vietnam in size (greatest length of skull 25. 0±0.11 mm ) , but differs in having gray-whited ventral surface instrad dull buffy; having more and developing palatal hofes,uaual four paris, among them, posterior both paris merge together to form two large and long holes; posterior edge of nasals is located before level of ffontopremaxillary suture (also differs all subspecies known); having decidedly promint upward brain case, braincase height 8. 7±0. 25 (8. 1～9. 1) mm instead 7. 9±0. 12 (7. 4～8. 4) mm; having narrower interorbital width 5. 0±0. 14 (4. 1～5. 3) mm instead 5. 5±0. 06 (5. 2�

关 键 词：猪尾鼠 分类 新亚种 分布 分化 

分 类 号：Q959.837[生物学—动物学]