title: Taxonomic notes on four species of panagrellus thorne (nematoda: cephalobidae).
abstract: Four populations of Panagrellus redivivus (Linnaeus, 1767) Goodey, 1945, and syntypes of P. dubius Sanwal, 1960, P. redivivoides (Goodey, 1943) Goodey, 1945, P. pycnus Thorne, 1938, P. zymosiphilus (Brunold, 1950) Brunold, 1954, and P. leucocephalus Steiner, 1936 were examined. Additional information on the morphology of spicules and stoma is presented. P. zymosiphilus is synonymized with P. redivivoides and Rühm's synonymization of P. silusiae and P. leucocephalus with P. redivivus is supported. Lectolypes for P. pycnus and P. redivivoides are designated.
authors.forename: H C
authors.initials: HC
authors.lastname: Hechler