Alosterna

Alosterna

*Alosterna* Mulsant, 1863 is a small, slender longhorn beetle of 6–12 mm, with a tapered body often clothed in sparse, fine yellowish pubescence and frequently displaying bright, variable colouration. The single European species, *A. tabacicolor* (De Geer, 1775), is a familiar and often abundant visitor to flowers — particularly those of Apiaceae and Rosaceae — along forest edges and in open woodland throughout much of the Palearctic. Adults are strong, diurnal fliers active from May to August, while larvae develop in decaying deciduous wood and bark, including that of standing trees. The genus ranges across Europe, Siberia, and East Asia, occupying habitats from lowlands up to approximately…

Seasonal activity

Flight season: Summer

Green = active months · Orange = peak

Host plants

Primary hosts: oak pine birch

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: On flowers (Apiaceae, Rosaceae) in forests and margins. Hosts: Betula.