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(Coleoptera, Diptera, Hymenoptera and Lepidoptera)
by
Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds
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SEMPERVIVUM.
House Leeks. [Crassulaceae]
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Three species of Sempervivum have beeen recorded in Britain, although one of them, montanum, not for 50 years.
Only one British miner is recorded on Sempervivum.
A key to the European miners recorded on Sempervivum is provided in Bladmineerders van Europa. |
Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Sempervivum
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1>An egg is deposited in the centre of the rosette. The larva makes untidy, winding and crossing corridors. When a leaf that has been eaten out it is left through an opening, and a new one is entered. Up to five leaves can be mined out in this way; they turn brown and shrivel. Pupation is outside the mine, in the ground.
The mine is ilustrated in British Leafminers. |
On Sempervivum tectorum in Britain and Sempervivum arachnoideum, Sempervivum montanum, Sempervivum tectorum in continental Europe.
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Cheilosia caerulescens (Meigen, 1822) [Diptera: Syrphidae].
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