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VITIS. [Vitaceae]
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Two
species of Vitis, Crimson-glory-vine (V. coignetiae)
and Grape-vine (V. vinifera) are recorded in in Britain.
Both are introduced.
No Diptera miners are recorded on Vitis in Britain.
One
non-Diptera miner, Cnephasia
incertana, is recorded on Vitis in Britain (see below).
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Key for the identification of the mines of British
non-Diptera recorded on Vitis
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Note:
The larvae of mining Coleoptera, Hymenoptera and Lepidoptera may live in a corridor mine, a corridor-blotch mine, a blotch mine, a case, a rolled or folded leaf, a tentiform mine or sandwiched between two more or less circular leaf sections in later instars. Larva may pupate in a silk cocoon. The larva may have at least six legs (although they may be reduced or absent), a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding). Larvae of Hymenoptera and Lepidoptera usually also have abdominal legs (see examples). Frass, if present, never in two rows. Unless feeding externally from within a case the larva usually vacates the mine by chewing an exit hole. Pupa with visible head appendages, wings and legs which lie in sheaths (see examples).
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Leaf-miner: In the first instar the larva mines the leaves, forming short,
irregular, blotch-like mines, but in later instars it lives externally,
feeding in spun leaves and often twisting those of tender shoots. Larval head light-brown or yellowish brown, edged with black postero-laterally,
ocellar area blackish; prothoracic plate black edged with whitish
anteriorly; abdomen dull dark green; pinacula distinct, black,
sometimes brownish but with black bases to setae; anal plate large,
black (Bradley et al., 1973).
Small,
full depth mine without a definite shape; little frass. Some silk
is deposited in the mine. The larva soon leaves the mine and continues
feeding among spun leaves (Bladmineerders
van Europa).
Recorded
on numerous genera and species of several plant families, including
Vitis, in Britain. Recorded on numerous genera and species
of several plant families, but not Vitis, elsewhere. Widespread
in Britain and continental Europe. Also recorded from the Channle
Is.
Cnephasia
incertana (Treitschke, 1835) [Lepidoptera: Tortricidae]
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