DESCRIPTION OF METAMPHIDELUS GEN. N. AND SCLERAMPHIDELUS GEN. N. (ALAIMIDAE: NEMATODA)*

Abstract

Two new genera of Alaimidae (Nematoda), Metamphidelus gen. n. and Scleramphidelus gen. n., are described. The main diagnostic characters of Metamphidelus are: vagina with thick, infolded walls; vulva with open lips, didelphic female reproductive apparatus, amphids with small and shallow fovea and small, roundish, heavily sclerotized opening. Two new species of Metamphidelus, M. brzeskii gen. n. sp. n. and M. winiszewskae, gen. n. sp. n., both from Poland, are described. Scleramphidelus gen. n., erected to accommodate the species Amphidelus lemani (Hofmänner, 1913), is characterized by sclerotized vulva and vagina and by thick-walled, heavily sclerotized spicules, lacking a central piece. The status of S. lemani and of Paramphidelus dolichurus (de Man, 1876) are discussed.