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).
Possibly a root feeder on Valeriana
officinalis on which adults are frequently caught (Spencer, 1972b: 68).
Hosts in Great Britain & Ireland: Currently unknown.
elsewhere: Currently unknown.
of year - larvae: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in Britain including
Cambridgeshire (Chippenham Fen), Sutherland (Golspie), Inverness
(Aviemore) (Spencer, 1972b:
68), East Cornwall (NBN
recorded in the Republic of Ireland: Co. Down and Co. Wicklow (Spencer, 1972b: 68).
NBN Grid Map:
Distribution elsewhere: Widespread in continental Europe including Denmark, Finland,
Norway, Sweden (Spencer, 1976:
332), Germany (Spencer, 1976:
566). Belgium, Czech Republic, Estonia, French mainland, Hungary,
Italian mainland, Lithuania, Poland, Slovakia and The Netherlands
(Martinez in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: