Tetropium

Tetropium

*Tetropium* Kirby, 1837 encompasses medium-sized, dark brown to black longhorn beetles of 8–20 mm, recognisable by their elongate, nearly cylindrical build and sparse fine pubescence. The genus is associated exclusively with Pinaceae — principally *Picea*, and in the wider literature also *Abies*, *Larix* and *Pinus* — breeding under the bark of weakened or freshly dead conifers, where larvae begin subcortical galleries before boring a characteristic hooked tunnel 2–4 cm deep into the sapwood for pupation. Adults are active roughly from April to August and undertake nocturnal flights, with both *T. castaneum* and *T. fuscum* ranking among the more consequential conifer-forest pests of the Pa…

Seasonal activity

Flight season: Spring–Summer

Green = active months · Orange = peak

Host plants

Primary hosts: pine

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: Pod kůrou oslabených smrků/jedlí. T. castaneum lesnicky významný. T. fuscum invazní v S Americe.