Leaf-mine: The initial gallery is twisted and can follow the leaf edge. It contains broken linear frass. it then widens to form a blotch or gallery, with scattered frass (British leafminers).

Oviposition on the leaf underside. There starts an initially strongly contorted narrow corridor with a linear interrupted frass line. This is continued in broad corridor or elongated blotch with dispersed frass. Often a number of mines in a leaf. Pupation inside the mine, in a a violet to blackish cocoon (Bladmineerders van Europa).

Larva: Greenish yellow, ganglia conspicuous, brown; head brown; ventral plates absent (Bladmineerders van Europa).

Pupa: Pupation in the mine (British leafminers).

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: August - November (British leafminers).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: South-east England including East Kent and South Wiltshire
(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, Bulgaria, Croatia, Czech Republic, Estonia, Finland, French mainland, Germany, Greek mainland, Hungary, Italian mainland, Latvia, Republic of Moldova, Poland, Romania, Slovakia, Slovenia, Sweden, Switzerland and Ukraine (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.