Leaf-miner:
Egg at the upperside or underside of the leaf. The mine begins as
a long narrow corridor with a linear frass line. The corridor abruptly
widens into a blotch that in the end may occupy almost an entire
leaflet. The blotch mostly starts at the base of the leaflet, and
here also most frass is concentrated. Pupation generally within
the mine; in rare cases the larva leaves the mine by an exit slit
in the lower epidermis (Bladmineerders van Europa).
Initially forms a slender gallery at the leaf edge and then doubles back, along the original workings, towards the petiole. It then forms a blotch, which occupies the whole leaf. the frass is deposited in the base of the leaf. The mine is similar to that formed by T.cryptella (British
leafminers).
Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).
Pale yellow, seeming green when still in the mine. The larva is
described by Gustafsson and van Nieukerken (1990a); thorax 1-3
dorsally with 10, 10, and 8 pairs of setae, respectively (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
Adult:
The adult is not illustrated in UKMoths (check for update). The species is included in mothdissection.co.uk.
Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time
of year - larvae:
July to October (Bladmineerders van Europa).
Time
of year - adults: Currently unknown.
Distribution
in Great Britain and Ireland: Britain including Durham, Isle of Wight, North Hampshire
and West Cornwall
(NBN
Atlas).
Also
recorded in the Republic of Ireland (Fauna Europaea and National Biodiversity Data Centre Map).
Distribution
elsewhere: Widespread in continental Europe including Austria,
Croatia, Czech Republic, Danish mainland, European Turkey, French
mainland, Germany, Greek mainland, Hungary, Italian mainland, Macedonia,
Norwegian mainland, Portuguese mainland, Sardinia, Slovakia, Slovenia,
Spanish mainland, Sweden, Switzerland and The Netherlands (Fauna Europaea).
NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
Ichneumonoidea - Links to species no longer available |
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Adelius subfasciatus Haliday, 1833 |
Braconidae: Cheloninae |
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