CerambycidaeCerambycinaeCallidiiniPyrrhidium

Pyrrhidium

Red-haired Longhorn
CerambycinaeCallidiini ⚘ Pollinator
W. Palearctic spp.
1
European spp.
1
Body length
8–14 mm
Activity
Diurnal
Flight season
Spring
Overwinters as
adult
Larva type
MRTVE_TV
Biotope
forest-saproxylic
Overview

Pyrrhidium

*Pyrrhidium sanguineum* is among the most instantly recognisable longhorn beetles in the Western Palaearctic: its entire body is densely clothed in vivid scarlet pubescence, making it unmistakable in the field. Adults emerge early in spring (March–May) and are frequently encountered on freshly cut or stored oak firewood. The larvae develop beneath the bark of dead or dying broadleaved trees — chiefly *Quercus*, but also *Carpinus* — in sunny, exposed situations, requiring only a single year to complete development.

Seasonal activity

Flight season: Spring

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Green = active months · Orange = peak

Host plants

Primary hosts: oak pine birch

CarpinusQuercus
⚑ Conservation note: none

External resources

GBIF · Wikidata · Käfer der Welt

Field tip: Entire body covered in bright red pubescence — unmistakable! In oak firewood. Spring species (Mar–May).