Nothorhina

Nothorhina

*Nothorhina* is a small, dark longhorn (8–16 mm) of old Scots pine forests, its cylindrical, rough-textured body rendering it almost invisible against furrowed bark. Larvae develop beneath the bark of old, sun-exposed, free-standing pines — often centuries old — feeding at the boundary of living and dead bark before pupating in the outer corky layers. Development spans two to three years, and resin-entombed larvae have been recorded. Adults are active from May to July, chiefly at night, and the oval exit holes are a characteristic field sign. The genus is regarded as an indicator of old-growth pine forest and is rarely encountered.

Seasonal activity

Flight season: Summer

Green = active months · Orange = peak

Host plants

Primary hosts: pine

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: Under conifer bark or on trunks. Hosts: Pinus (bark of living old trunks).