Exocentrus

Exocentrus

*Exocentrus* Dejean, 1835 is a genus of small to medium-sized longhorn beetles (5–12 mm) whose mottled grey pubescence renders adults virtually invisible against bark. With 18 species across the West Palaearctic and 6 in Europe, these crepuscular to nocturnal beetles inhabit broadleaf forests where larvae develop subcortically and into the wood of dead or dying branches and slender trunks, typically 1–7 cm in diameter. Host plants include *Quercus*, *Corylus*, *Fagus*, and *Ulmus*, with larvae consuming the sapwood zone and pupating in an irregular chamber just beneath the wood surface. Adults are attracted to host plant stems and may feed on bark, shoots, and leaves during their summer flig…

Seasonal activity

Flight season: Summer–Autumn

Green = active months · Orange = peak

Host plants

Primary hosts: oak beech broadleaf

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: In dead branches of deciduous trees. Hosts: Corylus.