Abstract
Summary Two new species and a new subspecies of Bursaphelenchus are described. Bursaphelenchus carpini n. sp. and B. cryphali okhotskensis n. subsp. were isolated from Cryphalus carpini emerged from a dead log of a Carpinus sp. collected in Ibaraki Prefecture, Japan, and from C. piceae emerged from a dead log of Abies sachalinensis collected in Hokkaido, Japan, respectively. Meanwhile, B. laciniatae n. sp. was isolated from the bark of dead Ulmus laciniata, which harboured Scolytus esuriens galleries, collected in Hokkaido, Japan. These three species phylogenetically belong to the eggersi/eremus-group clade and share common typological characters such as a relatively slender body, three-lined lateral field, male spicule with a well-developed condylus, short and wide blade (calomus-lamina complex) and lack of clear cucullus. These three species and subspecies can be distinguished from one another and their close relatives by the condylus shape, female tail shape and phylogenetic and biological characters.
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