Elateridae of the British Isles

Negastrius arenicola (Boheman, 1852)

Size – 3-5mm.

Description – One of the smallest British Elaterids. A quite rounded species, with a long pronotum in relation to the total body length. Predominantly black or very dark brown over the head, pronotum and elytra. There are two dull yellow spots in the centre of each elytron, towards the posterior margin. These are very obvious on some specimens, but almost absent on others. There is a dense covering of lighter brown hairs and longitudinal rows of pits are obvious running the length of the elytra. Unlike many other Elaterids these longitudinal rows have a slight inward curve about two thirds of the way down the elytra. The legs range in colour from yellow to dark orange-brown. The antennae also range in colour from light to dark brown and are short, not reaching the posterior edge of the pronotum.

Distribution – Unknown, only recently added to the British list by Mendel, 2002 (Duff, 2008).