牛蛭属及其一新种(颚蛭目,医蛭科)

回顾了医蛭科牛蛭属分类研究过程,目前牛蛭属有8种,其中中国有6种.报告了采自中国广东和海南的牛蛭属1新种:广东牛蛭Poecilobdella guangdongensis sp.nov.,对新种形态特征进行了描述,并与近似种菲牛蛭特征进行比较.

A NEW SPECIES OF THE GENUS POECILOBDELLA FROM GUANGDONG AND HAINAN, CHINA (HIRUDINEA, HIRUDINIDAE)

A review taxonomy of Hirudinidae, Poccilobdella, up to date, 8 speices of the genus are recorded in the world, they are: 1) Poecilobdella javanica (Wahlberg), 1856; 2) Poecilobdella manillensis Lesson, 1842; 3) Poecilobdella granulosa Savigny, 1820; 4) Poecilobdella viridis Moors, 1927; 5) Poecilobdella blanchardi (Moore, 1901); 6) Poecilobdella similes Moore, 1945; 7) Poecilobdella hubeiensis Yang, 1980; 8) Poecilobdella nanjingensis Yang, 1996. 6 species of the Poecilobdella are reported in China. One new species are described from Guangdong and Hainan Province China. The new species resembles Poecilobdella manillensis Lesson, 1842. but differs from the latter as follow.Table 1.Comparison of feature between Poecilobdella guangdongensis sp.nov and Poecilobdella manillensis.BHDFG2,WK11ZQ0,WK30ZQ,WKZQWPoecilobdella guangdongensis sp.novPoecilobdella manillensisStipesDorsum with a markedly center broad stripe of dark-brown; venter without stripe; lateral with four narrow black longatitued stripe, the between the two black, stripe of near to median and near to margins, there are dark dott. Margins with broad orange yellow stripe.Dorsum with a continuous obscure median dosal line of black; venter without stripes; margins with narrow yellow stripe.Colour of lffeDorsum olive or olive black rough; venter black greyDorsum grey green; venter grey or grey-yellowSizeLength 75-95mm, width 9-14mm Length 107-113mm, width 8.0-12.5Teeth number175(170-180)150(140-166)Vaginal stalkShort and roughNoCommon oviductCommon ovidut opening into vaginal caecum at the point of union vaginal caecum and vaginal duct Common oviduct and vaginal duct opening together directly into the female brusa Atrium Distinctly lees than epididymisAbout equaling in size epididymis Ejaculatory bulbVer smallVery largeFurrow on ventral surface of upper lipEight furrowOne median longitudinal furrow