Leaf-mine: A 'snail-trail'-like mine on the upper surface, long and sinuous, with a dark central frass trail, ending at the leaf margin (British leafminers).

Very long, rather broad, strictly epidermal, corridor that curves in dense loops over the leaf upperside, without ever crossing itself. Frass in a vague continuous central line. The gallery ends upon the leaf margin, where it widens a little, while the leaf margin folds over somewhat. Here pupation takes place, not in a cocoon (Bladmineerders van Europa).

Larva: Details unknown.

Pupa: Under a silk membrane on the margin of leaf (British leafminers). The pupa is illustrated in Bladmineerders van Europa.

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

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: June-July, August-September.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Britain including East Kent, East Suffolk, Hertfordshire, Middlesex, North Essex 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). See also British leafminers distribution map.

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, Belgium, Czech Republic, Danish mainland, French mainland, Germany, ? Hungary, Italian mainland, Poland, ? Portuguese mainland, Romania, Slovakia, Spanish mainland, Switzerland and The Netherlands. Also recorded in Near East (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.