云南新贝氏虫属一新种(指环虫目:锚首虫科)  

A NEW SPECIES OF Neobychowskyella FROM YUNNAN PROVINCE (Dactylogyridea:Ancyrocephalidae)

作　　者：字应伟[1] 骆永德[2] 

机构地区：[1]思茅师范高等专科学校生物系,云南665000 [2]云南师范大学生物系,昆明650092

出　　处：《Zoological Research》2000年第6期478-480,共3页动物学研究（英文）

摘　　要：报道了采自云南寄生于黄斑褶Pseudecheneissulcatus (McClelland)鳃丝上的新贝氏虫属一新种———钳状新贝氏虫Neobychowskyellachelicerussp .nov 。Neobychowskyella chelicerus sp.nov (Fig 1) Type specimens:deposited in the Deparment of Biology,Yunnan Teachers University and Simao Teachers College. Host: Pseudecheneis sulcatus (McClelland) Location:Luozha River (Yunxian County,24°28′N,100°07′E),Western Yunnan,China. Description:Minute worm,body size 0 288-0 432×0 060-0 080,pharynx 0 024-0 032,7 pairs of marginal hooklets,4 pairs embryonic type and 3 pairs enlarged,0 025-0 035 in length,2 pairs of anchors;dorsal central large hooks:total length 0 048-0 050,basal portion 0 048-0 050,inner and outer roots not marked,point 0 008-0 010;ventral anchors:total length 0 025-0 026,basal portion 0 020-0 026,inner and outer roots not prominent,point 0 008-0 010.Connective plate a rhomboidal ring,0 006-0 015×0 046-0 051.Connective bars paired,0 004-0 008×0 039-0 048.Accessory pieces 0 004-0 005×0 032-0 035,with an additional chitineous stick,0 020-0 024 in length.Onchium a double striped anchor like structure and with a crossed scissor like piece anterior to it.Copulating tuba arched,0 088-0 100 in length,basal diameter 0 004-0 005;supporting apparatus a curved membranous piece with a circular opening on its middle,and through this opening the copulating tube passes.Vagina tubular,0 052-0 083.Egg 0 064-0 073×0 064-0 086.Description based on 5 mounted specimens.

关 键 词：单殖吸虫 新贝氏虫属 新种 云南 锚首虫科 

分 类 号：Q959.1531[生物学—动物学]