Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 101
Agromyza alnibetulae Hendel, 1931; Spencer, 1969. Beitr.
Ent. 19: 6
Agromyza alnibetulae Hendel, 1931; Spencer, 1972b. Handbk
ident. Br. Ins. 10(5g): 36 (figs 107-8), 39, 109
Agromyza alnibetulae Hendel, 1931; Spencer, 1976. Fauna
ent. Scand. 5(1): 93, figs 129-130
Agromyza alnibetulae Hendel, 1931; Spencer, 1990. Host
specialization in the world Agromyzidae (Diptera) : 54, 60 (fig.
227), 61, 100, 178.
forming a narrow, unusually long, upper surface leaf-mine up to
12 cms, sometimes considerably widening at end; young leaves are
frequently distorted (Spencer,
1976: 93, fig. 130).
unusually long, upper-surface corridor that widens only little and
winds freely through the leaf. Frass in two neat rows. Pupation
outside the mine; exit slit (always?) in the lower epidermis (Bladmineerders van Europa).
A long, greenish, winding, upper surface gallery which sometimes broadens considerably at the end (British
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.
Yellow. Anterior spiracles each with 10 bulbs, posterior spiracles
with 3 bulbs (Skuhravá
and Roques, 2000). The larva is illustrated
in 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; posterior spiracles each with 3 bulbs (Spencer,
Hosts in Great Britain & Ireland:
of year - mines: June-November.
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in Britain including
London (Hampstead), Kent (Darenth), Surrey (Oxshott), Yorkshire
(Malham Tarn), Westmorland (Grasmere), Denbighshire (Cefn-y-bedd)
(Spencer, 1972b: 39), Inner
Hebrides (Isle of Coll, Arinagour) (Bland,
1992), Warwickshire (Coventry) (Robbins,
1991: 73) and Hampshire (Fleet) (British
leafminers), Cambridgeshire (VC29), East Kent (VC15), East Ross (VC106), East Sutherland (VC107), Hertfordshire (VC20), Leicesterahire, Mid-west Yorkshire (VC64), Middlesex (VC21), Shropshire (VC40),
South Wiltshire (VC8), South-east Yorkshire (VC61), South-west Yorkshire (VC63), Stafford
and Surrey (VC17), West Suffolk (VC26) and Worcestershire (VC37) (NBN
recorded in the Republic of Ireland: Co. Clare. (Spencer, 1972b: 39).
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elsewhere: Widespread in continental Europe including Denmark,
Finland, Norway, Sweden (Spencer,
1976: 93), The Netherlands, Luxembourg (Bladmineerders van Europa), Belgium (de
Bruyn and von Tschirnhaus, 1991) and Germany (Spencer,
1976: 546), Austria, Corsica, Czech Republic, Italian mainland,
Lithuania, Romania, Slovakia and Switzerland (Martinez in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: