Mompha subbistrigella

The wingspan is 7–11.5 mm.The forewing.The head is grey, the face whitish. The forewings are dark fuscous, in disc posteriorly mixed with light ferruginous-ochreous; sometimes bright orange.There is an ochreous-whitish blotch on base of dorsum, almost reaching the sta at base; a whitish fascia before middle, narrow on costa and broadly dilated downwards and two blackish scale-tufts on fold before -beyond this; an inwardly oblique white fascia towards apex, sometimes narrowly interrupted. The hindwings are grey.The larva is deep red, the incisions paler or yellow-whitish' The head is pale yellow-brown :in seedpods of Epilobiwm montanum^[2].M. subbistrigella resembles other Mompha (especially Mompha sturnipennella) and determination relies on the differences in the structure of both male and female genitalia.^[3][4]

Adults are on wing from late summer to late spring.^[5]

The larvae feed within the seedpods of broad-leaved willowherb (Epilobium montanum) and occasionally on other willowherb (Epilobium species).