ruddy flat-body

Agonopterix subpropinquella is a moth of the family Depressariidae. It is found in most of Europe.

The wingspan is 16–22 mm. The thorax is sometimes dark fuscous. Forewings are light ochreous to brownish -ochreous, sometimes slightly reddish -tinged, with a few blackish scales; first discal stigma black, preceded by a similar dot obliquely above it, second blackish, often obsolete; a dark fuscous often suffused spot between and above these. Hindwings pale fuscous. The larva is green; dorsal line somewhat darker; dots grey; head and plate of 2 black. They are found throughout Europe, widespread in England, Wales and less common in Ireland and northern Scotland.