Type species

Bostrychus asperatus Gyllenhal

Adapted from Wood 1982, p. 867-871


This genus is distinguished from the similar Hypocryphalus Hopkins by the 4-segmented antennal funicle, the three sutured oval club with at least the last two sutures recurved on the anterior face, and the broad third tarsomere.


Species in this genus range from 1.4 to 2.1 mm in length, and are approximately 2.3 to 2.4 times as long as wide. Their color is brown. The pronotum is wider than long with the lateral margins marked by a raised line or carina, the anterior half is asperate and armed in its margin by four to eight teeth. The scutellum is not visible. The declivity is convex and covered as the rest of its body by light colored and short, recumbent hair-like setae. The metepisternum is only visible anteriorly. The anterior margin of the compound eye is emarginate. The scape is usually longer than the 4-segmented funicle. The club is oval and it has at least the last two of its three sutures recurved. The procoxae are contiguous.


North America, Europe, and Asia to Australia

World fauna

Number of species 199, Native species: 3, Introduced species: 0


Abies, Picea, Pinus, Pseudotsuga, Sequoia