Three new species of parasitaphelenchids, Parasitaphelenchus frontalis n. sp., P. costati n. sp. and Bursaphelenchus hirsutae n. sp. (Nematoda: Aphelenchoididae), isolated from bark beetles from Japan

Abstract

SummaryThree parasitaphelenchid species,Parasitaphelenchus frontalisn. sp.,P. costatin. sp. andBursaphelenchus hirsutaen. sp., are described.Parasitaphelenchus frontalisn. sp. was isolated from the body cavity ofScolytus frontalisemerging from dead logs ofZelkova serratacollected from Kanagawa, Japan, and characterised by its four-lined lateral field in the adults and dome-shaped lip region of the parasitic juveniles. Whereas the two first-mentioned species were isolated fromAlniphagus costatus,B. hirsutaen. sp. emerged from dead logs ofAlnus hirsutacollected from Nagano, Japan.Parasitaphelenchus costatin. sp. andB. hirsutaen. sp. were recovered from the body cavity and the underside of the elytra of their host/carrier beetle, respectively.Parasitaphelenchus costatin. sp. is characterised by its three-lined lateral field in adults and the presence of a ventrally-directed hook on the lip region of the parasitic juvenile.Bursaphelenchus hirsutaen. sp. belongs to theeggersigroup of the genus and is characterised by its three-lined lateral field, dorsally truncate condylus and pointed rostrum of males, and long, smoothly tapering and strongly ventrally recurved, female tail. Molecular characterisation is provided for all three new species and their phylogenys discussed.