Leaf mine: Large blotch, begining at the leaf margin (there is no accumulation of frass). The oldest part of the mine with a charcteristic, wine red colour. Most of the frass is ejected through a narrow slit in the leaf margin. The larva makes an discoidal cocoon within the mine. Hibernation in the larval stage (Bladmineerders van Europa).

The mine is also illustrated in British leafminers.

Larva: The larva is illustrated in British leafminers.

Ripper (1931a), Lorenz & Kraus (1957a), Lindquist (1959a) and Smith (1971a) describe the larva. Thoracic feet reduced to stumps. Prosternum with a large dark patch; meso- and metasternum with a small dark spot. Pronotum with a large rectangular black sclerite. In the prepupal stage, when the larva does not feed any more, all pigmentation has disappeared (Bladmineerders van Europa).

Pupa: The larva pupates in the mine in a disc structure (British leafminers).

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: Summer British leafminers.

Time of year - adults: Unknown.

Comments: Full synonymy and references are listed in ECatSym - Electronic World Catalog of Symphyta.

Distribution in Great Britain & Ireland: Britain including Bedfordshire, Buckinghamshire, Easterness, West Suffolk and Westmorland (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).

Also recorded in the Republic of Ireland (van Achterberg in Fauna Europaea).

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, Estonia, Finland, French mainland, Germany, ? Italian mainland, Kaliningrad Region, Latvia, Poland, Romania, Sweden, Switzerland, The Netherlands and Ukraine (van Achterberg in Fauna Europaea).

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

Parasitoids in Britain and elsewhere: