Studies on the genus Aporcelaimellus Heyns, 1965 (Dorylaimida: Aporcelaimidae) - material studied by Thorne and Swanger in 1936 but not named

摘要

The identity of four species of Aporcelaimellus sensu lato studied, but not originally described, by Thorne and Swanger in 1936 are analysed and discussed on the basis of studies on the material deposited in Thorne's collection. Dorylaimus papillatus is described and illustrated, and provisionally considered to be a valid species since it is distinguishable from A. obtusicaudatus by the vagina, which is without pars refringens. The material labelled as Dorylaimus perfectus, often regarded as a synonym of A. obtusicaudatus, consists of two males very similar to those described for Labronema goodeyi, and seven females certainly belonging to A. obtusicaudatus; measurements and illustrations of these specimens are provided. One male labelled as Dorylaimus paraobtusicaudatus is Metaporcelaimus romanicus; it is described in detail and illustrated. Part of the material originally described as Dorylaimus propinquus is actually Aporcelaimellus waenga, of which new data, including detailed description, measurements and illustrations, are provided; in addition, Aporcelaimellus laevis is regarded as a junior synonym of A. waenga.