Leaf-miner and case-bearer: The first case is cut out of an oval mine in the centre of the leaf. The second and third, final, case are excised out of a mine along the leaf margin, and therefore have a serrate dorsal keel. The final case is a spatulate leaf case, 6-7 mm long, with a bivalved, square-cut rear end. The mouth angle is c. 45°. See Emmet et al. (1996a) (Bladmineerders van Europa).

Larva: See Emmet at al. (1996a) (Bladmineerders van Europa).

Pupa: Details unknown.

Adult: Not illustrated in UKMoths (check for update). The male and female genitalia are illustrated by the Lepidoptera Dissection Group.

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: Unknown.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Britain including Bedfordshire, Cambridgeshire, Isle Of Wight,
Northamptonshire and South Devon (NBN Gateway - N.B. includes Watsonian Vice Counties having publicly available records that fall within or overlap the vice county border at 10km resolution or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Widespread in continental Europe including Austria, Czech Republic, Danish mainland, French mainland, Germany, Greek mainland, Italian mainland, Norwegian mainland, Poland, Sardinia, Sicily, Slovakia, Spanish mainland and Sweden (Karsholt and van Nieukerken in Fauna Europaea).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: Unknown.