Stictoleptura

Stictoleptura

*Stictoleptura* Casey, 1924 is a medium-sized longhorn genus (8–22 mm) of the family Cerambycidae, subfamily Lepturinae, with 30 species across the West Palearctic and 8 in Europe. Adults are conspicuous flower visitors, most frequently encountered on Apiaceae and Rosaceae blooms from June to September, where they feed on pollen and nectar. The type species, *S. rubra* (Linnaeus, 1758) — the Red Longhorn — is among the most striking European cerambycids, with adults exhibiting strong sexual dimorphism: males are slender and yellowish, females broader and vivid red. Larvae develop in decaying wood of both deciduous and conifer trees, completing their cycle over two to three years.

Seasonal activity

Flight season: Summer–Autumn

Green = active months · Orange = peak

Host plants

Primary hosts: oak pine beech

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: Na květech (VI-IX). S. rubra silně pohlavně dimorfní — samec štíhlý žlutý, samice robustní červená!