中国远环蚓属蚯蚓(寡毛纲:巨蚓科)一新种  

ON ONE NEW SPECIES OF AMYNTHAS (OLIGOCHAETA: MEGASCOLECIDAE) FROM CHINA

作　　者：吴纪华[1] 孙希达[2] 

机构地区：[1]中国科学院水生生物研究所,武汉430072 [2]杭州师范学院生物系

出　　处：《四川动物》1997年第1期3-5,共3页Sichuan Journal of Zoology

基　　金：国家自然科学基金

摘　　要：本文描述于1993年在云南发现的远环蚓属蚯蚓一新种──方垫远环蚓Amynthasquadrapulvinatussp．nov.,以其受精囊两对、腺垫为长方形、无环形小沟等特征，与相似的双沟远环蚓有显著差异。During the study of the soil invertebrates in typical areas of China, one species belonging to the genus Amynthas has been identified as new to science. The diagnosis of the new form is givcn as follows.Amynthas quadrapulvinatus sp.n.L.49 - 77mm;D. 2.7 - 4. 1mm;Segs. 102 - 106 (type: L. 68mm; D. 2.9mm; Segs. 106) .First dorsal pore in 10/11. Clitellum with dorsal pore but without seta. seae stout, widely spaced. 28 - 36/Ⅲ, 50 - 58/Ⅳ, 58 - 68/Ⅷ,34-36/XVⅢ,68 - 72/XXV; formula: 12 - 14(Ⅶ), 0(XVⅢ) [type: 36/Ⅲ, 54/Ⅵ, 68/Ⅷ, 34/XVⅢ, 70/XXV; 14(Ⅷ), 0(XVⅢ) ].Male pores ca. 1/6 ventrally apart, both on a glandular ventral pad of 1/3XV - 1/3XIX. Pad rectangular, sharply marked off from surrounding skin, setae absent. Each male pore on a small conical papilla. Two pairs larger, truncated additional papillae between two male pores. Spermathecal pore 2 pairs in 6/7,7/8, distanee ahaut 1/5 of body cireumfrence ventrally.Septa 8/9, 9/10 absent. Caeca simple.Testis sacs separate. Seminal vesicles well developed. Diverticulum shorter than main part, duct straight, seminal chamber club - shaped. Second pair spermathecae larger than anterior ones.Locality: Yunnan Province, collected 1993, 10 specimens deposited in the Department of Biology, Hangzhou Normal College.The new species resembles Amyrnthas bisemicircularis(Ding 1985) by having a glandular pad in male pore region, butpesesses the following main differenees: (1)spermathecal pores 2 pairs; (2)glandular pad rectangular; (3)no semicircle.

关 键 词：寡毛纲 巨蚓科 远环蚓属 新种 

分 类 号：Q959.193[生物学—动物学]