【摘要】 <正> 北京地区鼠类寄生线虫,过去仅有李希杰(Li,1933)和李书颖与徐锡藩(Li andHsu,1948)的零星记载,而大量的调查研究至今尚无报道。 1964年和1973年,我们先后在北京附近的雾灵山、百花山和一些粮仓对鼠类寄生线虫进行了调查,共剖检了标本567只,其中褐家鼠(Rattus norvegicus)393只、达乌尔黄鼠(Citellus dauricus)103只,岩松鼠(Sciurotamias davidianus)26只,中华鼢鼠(Myo-spalax fontanieri)16只,黑线仓鼠(Cricetulus barabensis)15只;以及麝鼹(Scaptochirus更多还原

【Abstract】 The specimens for the present study were collected from Peking in 1964 and 1973.After an examination of 393 Rattus norvegicus, 103 Citellus dauricus, 26 Sciurotamiasdavidianus, 16 Myospalax fontanieri, 15 Cricetulus barabensis and 14 Scaptochirusmoschatus, 8 species of nematodes belonging to 5 families and 7 genera were revealed.Among them, 2 are new to science and 2 species: Gongylonema longispiculum longispi-culum Schulz, 1927 and Ascarops africana (Sandground, 1933) are recorded for the firsttime from China, Citellus dauricus is found to be new hosts of G. longispiculumlongispiculum and Ascarops africana. At the same time, the en-face view of G. spumosawas taken with the scanning electron microscope (fig. 1). All the type specimens are deposited in the Institute of Zoology, Academia Sinica.The diagnoses of the new species are given below. 1. Ascarops scaptochiri, sp. nov. (fig. 2) Host: Scaptochirus moschatus Location: Stomach Locality: Peking Types: Holotype , Allotype , Paratypes 3 2 . Male: Body 6.46--9.05mm in length and 0.182--0.249 mm in diameter. Caudalalae present. 4 pairs of preanal and 2 pairs of postanal pedunculated papillae, 9--15pairs of sessile papillae at tip of tail. Spicules unequal, the longer 1.19--1.27 mm (L.S.) and the shorter 0.30--0.32 mm (R. S.) in length. Female: Body 14.0--17.09 mm inlength and 0.25--0.273mm in diameter. The present worm resembles Ascarops sp. Jairajpuri and Siddiqi, 1971 in the bodysize, but is distinguished by the presence of more (9--15: 5 pairs) sessile papillae attip of tail, and by the shorter spicules. 2. Morganiella cricetuli, sp. nov. (fig. 3) Host: Cricetulus barabensis Location: Intestine Locality: Peking Types: Holotype , Allotype , Paratypes 12 45 . Male: Body 1.64--2.58 mm in length and 0.05--0.055 mm in diameter. Dorsal raywith 2 branches at about 2/5 from the proximal end, each being subdivided toward themargin of the bursa. Spicules equal, 0.09--0.10 mm in length, each being provided witha membranous wing. Female: 3.3--4.04mm in length and 0.06 mm in diameter. The present worm differs from M. talpae (Morgan, 1928), M. mogera (Sadovskaja,1952) and M. morenishi (Cameron et Parnell, 1933) in having conical spicules andsubdivided dorsal ray.更多还原