cinerascens Macquart, 1835. Hist. nat. Ins., Dipt.
Agromyza cinerascens Macquart, 1835; Hendel, 1931. Fliegen
palaearkt. Reg. 6(2): 111
Agromyza cinerascens Macquart, 1835; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 32 (fig. 83), 33, 123
Agromyza cinerascens Macquart, 1835; Spencer, 1976. Fauna
ent. Scand. 5(1): 102-3, fig. 154
Agromyza cinerascens Macquart, 1835; Spencer, 1990. Host
specialization in the world Agromyzidae (Diptera) : 355, 356,
360 (fig. 1349), 361.
mine, broadened irregularly. Pupation external (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.
Mandibles with two teeth; anterior spiracles each with about 18
Below the mandibles no field with spiny warts. Front spiracles bifid, about 18 bulbs. Rear spiracula rather strongly approaching, with 3 bulbs. Mandibles with 2, not alternating, teeth (Bladmineerders van Europa).
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).
Reddish-brown to black; posterior spiracular processes widely separated
(Spencer, 1976: 103).
Hosts in Great Britain & Ireland:
of year - mines: Currently unknown.
of year - adults: April.
in Great Britain & Ireland: Widespread, at least in south.
Surrey (Bookham, Limpsfield and Mitcham), Sussex (Buxted), Gloucester.
(Bristol), Hampshire (Holywell), Suffolk (Barton Mills) (Spencer, 1972b: 33), Warwickshire (Allesley and Longford) (Robbins,
1991: 135); Cambridgeshire and Surrey (NBN
elsewhere: Widespread in continental Europe including Denmark,
Finland, Norway, Sweden (Spencer,
1976: 103), The Netherlands (Bladmineerders van Europa), Germany (Spencer,
1976: 546), Belarus, Belgium, Croatia, Czech Republic, Estonia,
French mainland, Hungary, Italian mainland, Lithuania, Poland, Sicily,
Slovakia and Spanish mainland (Martinez in Fauna Europaea).
recorded in Japan (Spencer, 1976:
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.