Mines similar to A. hendeliana but darker (British
leafminers), filled centrally with dark-green frass (Spencer,
widening, upper-surface corridor, generally unbranched and not associated
with the leaf margin. Frass in a broad green band with scattered
dark granules, sometimes locally with ill-defined strikes. Pupation
outside the mine; exit slit in upper epidermis (Bladmineerders van Europa).
Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts, although they do have a characteristic cephalo-pharyngeal skeleton (see examples), usually visible internally through the body wall.
The yellow larva is illustrated in Bladmineerders van Europa and British
Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages, wings and legs are not visible externally (see examples).
Posterior spiracles on short projections, each with an ellipse of
12 sligtly chitinised bulbs (Spencer,
1976: 31).The puparium is illustrated in British
Hosts in Great Britain & Ireland:
of year - larvae: June.
of year- adults: July.
in Great Britain & Ireland: Recorded as new to Britain from
Hampshire (Fleet) (British leafminers - Newsletter
6) and subsequently recorded from Kent (Foxbush, Hildenborough
and Tonbridge) (British leafminers - Newsletter
elsewhere: Widespread in continental Europe including Belgium
(De Bruyn and von
Tschirnhaus, 1991), Czech Republic, Denmark, Finland, French
mainland, Germany, Lithuania, Republic of Moldova, Norwegian mainland,
Poland and The Netherlands (Martinez in Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.