Leaf-mine: A whitish-greenish blotch. Pupation external, on the ground (Spencer, 1972: 43, fig. 140; Spencer, 1976: 306-7, fig. 552).

A chacteristically pale whitish, usually upper-surface, primary blotch. There is an initial corridor, but traces of it are almost always overrun by the later blotch. The mine is quite opaque; only by opening it can it be ascertained if the mine is still occupied. No feeding lines are apparent. Unlike other blotch mines thay may occur here, Calycomyza mines are totally flat. Pupation outside the mine (Bladmineerders van Europa).

A whitish blotch mine occuring on the upper leaf surface. Starts with a short corridor and does not show feeding lines. Superficially similar to the lepidopterous mine made by Leucospilapteryx omissella, but the latter mine turns purple as it ages (British leafminers).

Larva: The yellowish larva is described by de Meijere (1925). Sasakawa (1961) and in (Bladmineerders van Europa).

Puparium: Reddish-brown, deeply segmented; posterior spiracles each with 3 bulbs (Spencer, 1976: 306).

Hosts in Britain:

Hosts elsewhere:

Time of year - mines: Bivoltine, Summer and Autumn (British leafminers).

Time of year - adults: June, September.

Distribution in Great Britain and Ireland: Widespread in England including London (Hampstead), Cambridge (Chippenham Fen), Oxford (Shotover), Norfolk (Norwich), Lancaster (Withington) (Spencer, 1972: 48), Warwickshire (Coventry) (Robbins, 1991: 118); Cambridgeshire, Durham, East Sussex and Surrey (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 Denmark, Finland, Norway, Sweden, [former] Yugoslavia (Spencer, 1976: 305-6), The Netherlands, Luxembourg (Bladmineerders van Europa), Belgium (de Bruyn and von Tschirnhaus, 1991), Germany (Spencer, 1976: 562), Austria, Czech Republic, Estonia, French mainland, Hungary, Lithuania, Slovakia, Spanish mainland and Switzerland (Martinez in Fauna Europaea).

Also recorded in China, Japan, Colombia (Spencer, 1976: 305-6) and Canada (Spencer, 1969a: 146).

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

Parasitoids in Britain and elsewhere:

Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea [128552]
NBN Gateway