Stem-mine: An external stem mine with frass in two rows of disconnected strips. Pupation in stem at end of mine (Spencer, 1972: 25; Spencer, 1976: 61 (fig. 63B), 65-6).

Larva: Posterior spiracles each with 11-12 bulbs (Spencer, 1976: 66).

Puparium: Black (Spencer, 1976: 66).

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: Unknown.

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Uncommon. London (Hampstead) (Spencer, 1972: 25), Warwickshire (Robbins, 1989: 20) and Cambridge (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: Uncommon but Widespread in continental Europe including Austria, [former] Czechoslovakia, France, Finland, Germany, Hungary, Sweden (mines only) (Spencer, 1976: 66), Czech Republic, Lithuania, Poland and Slovakia (Martinez 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.