An external mine on stem or leaf stalk. Pupation either at leaf
base or beneath epidermis of main stem (Spencer, 1972b: 31).
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.
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 agree closely with those of O.
orbiculata on Pisum (Spencer, 1972b: 31).
Hosts in Great Britain & Ireland:
of year - mines: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in south, but not
common. Surrey (Bookham), Middlesex (Scratch Wood) and Berkshire (Silwood
Park) (Spencer, 1972b: 31).
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Distribution elsewhere: Widespread in continental Europe including Czech Republic, Estonia,
French mainland, Lithuania, Poland, Slovakia and Spanish mainland
(Martinez in Fauna Europaea).
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British and Irish Parasitoids in Britain and elsewhere: