我国长喙蚤属一新种记述及对该属属征的修订

DESCRIPTION OF A NEW SPECIES OF DORCADIA IOFF,1946 IN CHINA AND A REVISION OF THE GENERIC CHARACTERS (SIPHONAPTERA:VERMIPSYLLIDAE)

本文记述了长喙蚤属一新种 ,为纪念采集人田维中先生 ,特命名为田氏长喙蚤新种Dorcadiatianisp .nov .。此新种与该属迄今记述的其它 4种的主要区别是下唇须相对较短 (♂性尤甚 ) ,后足胫节外侧自基至端仅 1列鬃且十分少 ,♀腹部第 7背板在气门位置明显前凸。该新种与羊长喙蚤较相近 ,与后者的主要不同在于后足胫节后缘只有 3个切刻、柄突相对较短且略向下弯曲及♀腹节中间背板气门明显的小等。标本于 196 6年 10月采自西藏可共茶卡 ,宿主为藏羚羊。本文同时对该属已知种类的模式产地、国内外地理分布及宿主进行了比较分析 ,对属征进行了探讨和修订。

Dorcadia tiani sp.nov.\;The new species is readily distinguishable by the combination of the following characters between the new species and other 4 known species:1.labial palp is relatively short 16～20 in ♀,11～13 in ♂;2.only 1 row of bristles (8～10) bears on the outer side of hind tibia from its base to tip;3.in ♀,the anterior margin of t.7 in the front of the spiracle being convex.The new species closely related to Dorcadia ioffi, Smit,1953,but differs from it not only by above metioned 3 common diagnostic characters,but also 1.the frontal bristles reduced (only 1,rare 2);2.there are only 3 notches on the dorsal margin of hind tibia; 3.manubrium is shorter and down curved slightly; 4.in ♀,the middle tergal spiracles of adbomens is smaller obviously than the eyes.\;Holotype ♂,measuring 3 2 mm long,paratypes 1♂,2♀♀(dilated)taken in October,1966 ex Pantholops hodgsoni Abel.From Kegong Chaka of Tibet,China (N33°,E88°).All types are deposited in the Medical Entomology Collection of the Institute of Microbiology and Epidemiology,AMMS,Beijing.