Vol. 41 No. 1, 2002

Taxonomic Studies of Parasitic Nyctotherans from Chinese Anura Amphibians IV. Spirocytopharynxa gen. nov. and Macrocytopharynxa gen. nov

Lian-Xiang Li, Jian-Guo Wang* and Wu-Han Xiao

Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China

Lian-Xiang Li, Jian-Guo Wang and Wu-Han Xiao (2002) This paper describes 2 new genera and 5 new species of nyctotherans from Anura amphibians distributed in southern China. Based on the composition of the upper and bottom flaps, the number and position of sutural lines, the length of the oral groove, and the morphology and position of the end of the cytopharynx, the adoral zone of the membranelle (AZM), and the macronucleus, two new genera were established. The 3 new species, Spirocytopharynxa sinensis, S. guangxiensis, and S. quadranus, belong to the new genus Spirocytopharynxa. Another 2 species, Macrocytopharynxa (Nyctotheroidae Nie, 1932) pyriformis n. comb. and M. lingchuanensis n. sp., belong to the new genus Macrocytopharynxa. The characteristics for diagnosis of the 2 new genera and 5 new species are described in this paper.

Key words: Anura amphibian, Spirocytopharynxa, Macrocytopharynxa, New genus, New species.

*Correspondence: Tel: 86-27-87647720/87647721. Fax: 86-27-87647679. E-mail: wangjg@ihb.ac.cn