Hylurgops


Type species

Hylastes pinifex Fitch

Adapted from Wood 1982, p. 82-92


Diagnosis

Hylurgops are very similar to and difficult to distinguish from Hylastes Erichson. Most Hylurgops have a characteristic declivity vestiture of scale-like setae, while others have rows of long and hair-like setae. Declivital hair-like setae in Hylastes, if present, are not longer than the ground vestiture, and scale-like setae are absent in the majority of these species. One last character that distinguishes the two is the pronotal punctures which are of different sizes in Hylurgops.


Description

Species in this genus range from 3.1 to 5.7 mm and are approximately 2.4 to 2.8 times as long as wide. The pronotum is usually as long as wide, constricted anteriorly and unarmed, also with differently sized punctures. The scutellum is small. The declivity is convex, usually bearing granules. The vestiture consists of both hair-like and scale-like setae, the last usually restricted to the declivity. The frons usually has a median carina above the epistoma. The anterior margin of the compound eye is entire. The scape is as long as the 7-segmented funicle. The club is ovate with two to three straight sutures visible. The procoxae are contiguous.


Distribution

The Holarctic realm, with intrusion into the Neotropics south to Guatemala


World fauna

Number of species: 23, Native species: 6, Introduced species: 1


Established exotic species

Hylurgops palliatus is present in New York, Pennsylvania, and Ohio.


Hosts

Abies, Cedrus, Larix, Picea, Pinus, Pseudotsuga, Tsuga