Leaf-miner: Mine
linear but normally developing into secondary blotch, feeding confined
to apex of a leaf segment (Spencer, 1972b: 70 (fig. 225); Spencer,
1976: 374, 375 (fig. 652)). Pupation normally external, but
Lundquist (1947) records
that 8 of 10 larvae pupariumted in the mine in Sweden.
The
mine is also dexcribed and illustrated in British
leafminers.
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. Described by Hering (1967a, as clematobia); mandible two-teethed alternating; anterior spiracles fist-shaped with 9 bulbs, posterior spiracles with 13 bulbs, arranged in a horse shoe (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 spiracular processes extended, each with
up to 18 bulbs (Spencer, 1976:
374).
Reddish-brown, with the rear spiracula conspicuously elongated (depicted in Hering, 1925b and de Meijere, 1937a) (Bladmineerders van Europa).
Hosts in Great Britain and Ireland:
Hosts
elsewhere:
Time
of year - mines: May.
Time
of year - adults: April. A single generation.
Distribution
in Great Britain and Ireland: Sussex (Chailey), Gloucestershire
(Gloucester - mines) (Spencer, 1972b: 73); Easterness and North-east Yorkshire (NBN
Atlas). Also Flatropers Wood, Beckley, East Sussex (British
leafminers).
Also
recorded in the Republic of Ireland (Fauna Europaea). Distribution
elsewhere: Widespread in continental Europe including Denmark,
Finland, Sweden (Spencer, 1976:
374), Germany, Italy (Bladmineerders van Europa), Lithuania, Malta and Yugoslavia (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
Ichneumonoidea - Links to species no longer available |
|
Dacnusa
maculipes Thomson, 1895 |
Braconidae: Alysiinae |
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