Type species

Pseudohylesinus grandis Swaine

Adapted from Wood 1982, p. 129-130


Pseudohylesinus is similar to Xylechinus Chapuis and Hylorgupinus Swaine, but it can be easily distinguished by the two-color pattern of dark and light scale-like setae covering the body.


Species in this genus range in length from 2.2 to 5.8 mm and are approximately 2.1 to 2.5 times as long as wide. Their color consists of patterns of light and dark areas due to the bicolored vestiture, which are similar to Hylesinus Fabricius. The pronotum is usually wider than long. The scutellum is small and depressed. The declivity is convex with a vestiture consisting of abundant scale-like setae and rows of longer and erect interstrial hair-like setae that are also present on the elytra. The frons has a median carina above the epistoma. The scape is shorter than the 7-segmented funicle. The ovate club can be broad to slightly flat, and it has three straight sutures. The anterior margin of the compound eye is entire. The procoxae are separated.


Western North America

World fauna

Number of species: 11, Native species: 8, Introduced species: 0


Abies, Picea, Pinus and other conifers