Rhamnusium

Rhamnusium

*Rhamnusium* Latreille, 1829 is a small genus of striking Lepturinae longhorn beetles, with three Palaearctic species and one representative in Europe. Adults are conspicuous, often brightly bicolored — typically with a red pronotum contrasting against dark elytra, or entirely reddish — and are strong diurnal fliers regularly observed visiting flowers of Apiaceae and Rosaceae. Larvae develop over two to three years within decaying heartwood cavities of living or weakened veteran deciduous trees, particularly in old allées, parks, and riparian woodlands. The genus is considered an indicator of old-growth and ancient trees, and its presence signals structurally complex, near-natural forest lan…

Seasonal activity

Flight season: Summer

Green = active months · Orange = peak

Host plants

Primary hosts: poplar broadleaf

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: On flowers (Apiaceae, Rosaceae) in forests and margins. Hosts: Populus. Floodplain/riparian forest.