Wireworm Click Beetle
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Agriotes obscurus
Fairly common & widespread in Britain.
Flies from March-June.
Adult beetles of Agriotes obscurus are of medium size and 7–10 mm long.
They can be identified by the following combination of features:
Pronotum clearly wider than long, its sides strongly curved.
The whole thorax strongly and densely punctured.
Elytra relatively short with narrow longitudinal ridges arranged in pairs, the distal part wedge-shaped.
Color dark brown to black with elytra, legs and antennae often lighter. However, the whole insect may also be of the same color.
The antennae are slightly longer than head and thorax combined.