Elateridae of the British Isles

Brachygonus ruficeps (Mulsant & Guillebeau, 1885)

Size – 5-6.5mm.

Description – Fairly uniform dark brown with a slightly lighter brown area at the posterior edge of the pronotum, extending for most of the width. A dense covering of light brown hairs is obvious. The legs and antennae are a lighter brown colour and the antennae are long, extending a way beyond the posterior edge of the pronotum.

National Biodiversity Network map showing the distribution of Brachygonus ruficeps across Britain and Ireland.

British and Irish distribution of Brachygonus ruficeps (Mulsant & Guillebeau, 1855) based on records held by the National Biodiversity Network.

Distribution data supplied by:

  • Countryside Council for Wales
  • Natural England

Distribution – The sole British locality of this species is Windsor, where it was discovered by Allen, (1938) and subsequently re-found in 1986.

Biology – The larvae are associated predominantly with old decayed Oak (Quercus rober), where they are often found in old cavities in the trunks and large branches. The larvae pupate and eclose at the end of the summer and the imago overwinters inside the pupal case.

Habitat – Ancient broadleaved woodland.