Conosanus obsoletus

Length: 5 to 6 mm. The vertex normally four dark marks in a V-shape pointing toward the tip, although these are not always present or may be supplemented by further small dots. The forewings have a variable-strength pattern of irregular dark dots, often forming streaks parallel to the veins. The male fore-wings are slightly longer than the abdomen, those of the female somewhat shorter than the abdomen. Females have a tooth on the underside of the 7th abdominal sternum.

Can only be identified by examination of internal genital structure. 
 

Damp places with rushes.

Adult: July to October.

Widespread and common in the right habitat.

Status in Leicestershire and Rutland not known.