Elateridae of the British Isles

Paraphotistus impressus (Fabricius, 1793)

Size – 13-15mm.

Description – A more rounded species often widening towards the back of the elytra. Dark brown or black in colour, with a noticeably covering of hairs and ridges down the length of the elytra. The legs are unicolourous with the rest of the insect and the antennae are relatively short – less than the length of the pronotum.

National Biodiversity Network map showing the distribution of Paraphotistus impressus across Britain and Ireland.

British and Irish distribution of Paraphotistus impressus (Fabricius, 1792) based on records held by the National Biodiversity Network.

Distribution data supplied by:

  • Countryside Council for Wales
  • Natural England
  • Highland Biological Recording Group
  • National Trust for Scotland (staff)
  • North East Scotland Biological Records Centre

Distribution – Stronghold in north Scotland with scattered records from north Wales, Cheshire, Staffordshire and North Yorkshire.

Biology – Larvae feed within the trunks of trees. Imago insects are active in June and July and can be found resting on various species of grasses, under stones in grasslands, on flower buds, under bark¬†and by beating conifer trees. Association is noted particularly with Scot’s Pine (Pinus sylvestris), Norway Spruce (Picea abies) and Birchs (Betula spp.)

Habitat РPrimarily upland conifer plantations, wet woodland and grasslands.