Coleophora flavovena is a moth of the family Coleophoridae. It is found in Japan (the islands of Hokkaido and Honshu), Korea, and southeastern Siberia.
The wingspan is . Adults are on wing from late June to early August.
The larvae feed on the leaves of Artemisia princeps and Artemisia montana.[1] They create a leaf-case, made of leaf fragment which are cut from the edges of the leaves of the host plant and attached (one behind the other) in a zigzag manner. The colour is generally dark greyish-brown, except for some sections which are densely covered by light-coloured felt. The case is about long.