Dendroctonus


Type species

Bostrichus micans Kugelann

Adapted from Wood 1982, p. 150-199


Diagnosis

In North America, species of the genus Dendroctonus can be distinguished from the introduced Tomicina, Hylurgus Latreille and Tomicus Latreille, and the native Xylechinus Chapuis, by the anterior margin of their compound eye. The genus includes some of the largest specimens of North American Scolytinae.


Description

This genus includes North American specimens with the larger size, ranging from 2.5 to 9.0 mm in length and approximately 2.3 to 2.6 times as long as wide. Their body color is dark brown to black, some species with reddish brown elytra. The pronotum is wider than long and unarmed. The scutellum is small. The declivity is convex with hair-like setae. The vestiture consist of erect hair-like setae. The anterior margin of the compound eye is entire. The scape is as long as, to slightly longer than, the 5-segmented funicle. The club is spatulate with three procurved sutures. The procoxae are contiguous.


Distribution

Arctic North America to northwestern Nicaragua, Northern Europe, and Asia


World fauna

Number of species: 20, Native species: 14, Introduced species: 0


Hosts

Abies, Larix, Picea, Pinus, Pseudotsuga, Tsuga