The species have a gray to brown elongated body, with the eyes located backwards in the head.

[2] They sometimes come in green colour,[3] and are 8–10 millimetres (0.31–0.39 in) in length, which makes it a rather big species of its kind.

[5] The species lacks femoral spurs, and have densely pitted prothorax.

The larvae are light yellowish and is born in summer, with adults taking over by August.

Adults and larvae are both feeding on unripe grains, which includes: Alopecurus, Dactylis, Festuca and wheat.