Vesperus

Vesperus

*Vesperus* Dejean, 1821 — the "Evening Longhorn" — stands apart from nearly all other Cerambycidae by its remarkable autumnal activity window: adults emerge from September through December, long after most longhorn beetles have vanished. Females are instantly recognisable by their dramatically abbreviated elytra, which leave the vestigial, non-functional hindwings fully exposed, rendering them permanently flightless. Males, darker and fully winged, are drawn to UV light on warm Mediterranean nights. With 15 species across the western Palaearctic — eight in Europe — the genus is a stronghold of Iberian endemism, centred on the Iberian Peninsula, southern France, Italy, and North Africa.

Seasonal activity

Flight season: Spring–Autumn

Green = active months · Orange = peak

Host plants

Primary hosts: herb

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: Autumn species (Sep–Dec)! Nocturnal, attracted to light. Female brachypterous. Mediterranean endemic.