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(Coleoptera, Diptera, Hymenoptera and Lepidoptera)
by
Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds
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PIPTANTHUS.
Evergreen Laburnum. [Fabaceae]
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Piptanthus
is not found in the wild in Britain.
One
non-Diptera leaf-miner, Leucoptera
laburnella, is recorded on Piptanthus in Britain.
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Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Piptanthus
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1 > Leaf-miner: An irregular gallery filled with greenish frass, leading to a circular
or oval blotch with blackish frass arranged in a spiral fashion.
The
very first part of the mine is a densely contorted corridor of about
2 mm long, that quickly turns brown. It is followed by a more or
less straight corridor of c. 10 mm, entirely filled with greyish
green frass. This suddenly widens into a round blotch that during
its expansion overruns the earlier corridor and in the end may occupy
half of a Laburnum leaflet. The frass, greenish at first, black
later, is deposited in the bloth in roughly concentric arcs, glued
to the upper epidermis. Pupation external, exit slit in upper epidermis. |
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On Cytisus, Genista, Laburnum, Lupinus and Piptanthus in Britain and Astragalus, Chamaecytisus, Genista, Laburnum, Laburnocytisus,
Lupinus and Petteria elsewhere. Widespread in Britain
and continental Euorpe. Also recorded in the Republic of Ireland.
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Leucoptera
laburnella (Stainton, 1851) [Lepidoptera: Lyonetiidae].
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