【摘要】 <正> 本文报道北京地区鼠类寄生线虫标本中所发现的绕体科Heligmosomatidac一新种。模式标本存中国科学院动物研究所。更多还原

【Abstract】 The present paper gives description of a new species of parasitic nematode belonging to the genus Heligmosomum Railliet et Henry, 1909. Type specimens are deposited in the Institute of Zoology.Heligmosomum sinensis, sp. nov. (fig, l)Host: Myospalax fontanieri.Location: Intestine.Types: Holotype ,allotype , paratypes 28 18, Beijing, May 1964.Male: Body 2.95-4.03mm in length and 0.084-0.156 mm in diameter: Cuticle with 12 longitudinal ridges. Bursa asymmetrical, lateral bursal lobe large, right lobe 0.35-0.39 mm in diameter and left 0.195-0.225mm. Prebursal papillae and ventro-ventral ray very long, reaching to bursal margin. Spicules equal in length, 1.474-1.606mm.Female: Body 3.70-4.60mm in length and 0.108-0.144mm in diameter. Anus 0.055-0.07 mm to tail end. ova 0.055-0.065×0.04 mm.The present worm differs from H. myospalaxi in the following features: 1. ventro-ventral ray in the left lateral bursal lobe very long, postero-lateral and externodorsal rays slender, all reaching to bursal margin. 2. spisules equal in length, 3, eggs smaller, 4. cuticle with 12 longitudinal ridges.更多还原