Cidnopus aeruginosus
Another frequent visitor of gardens is the black, slightly shiny Cidnopus aeruginosus. It can be distinguished from other black click beetles by the short hairs. In the right light they softly gleam yellowish, like gold. This click beetle has a groove in the thorax where the first elements of the antenna can be put for better protection.
Cidnopus aeruginosus is not a very big species, measuring some 9 to 12 mm. The wireworms are strict vegetarians feeding on grass roots. Adults are seen from April to June. This species prefers open landscapes with sandy soils.