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(Coleoptera, Diptera, Hymenoptera and Lepidoptera)
by
Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds
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FAGOPYRUM.
Buckwheats. [Polygonaceae]
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Three
species of Fagopyrum, Tall Buckwheat (F. dibotrys),
Buckwheat (F. esculentum) and Green Buckwheat (F. tataricum),
are recorded in Britain. All are introduced.
Two British miners are recorded on Fagopyrum.
A key to the European miners recorded on Fagopyrum is provided in Bladmineerders van Europa.
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Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Fagopyrum
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1a > 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. |
Polyphagous. On numerous genera and species of plant families, but not yet
on Fagopyrum, in Britain. On numerous genera
and species of plant families including Fagopyrum elsewhere.
Widespread in Britain and continental Europe. Also recorded from
the Channel Is.
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Cnephasia
incertana (Treitschke, 1835) [Lepidoptera: Tortricidae]. |
1b > Leaf-miner: Large upper side blotch or blister mine, which can start
with a short corridor. In small leaves the mine can be full depth
in places. Often several larvae in a mine; frass irregularly scattered
in large lumps. Pupation external. |
On Fallopia, Persicaria, Polygonum, Rumex and ?Begonia, but not yet on Fagopyrum, in Britain and in addition Begonia [Begoniaceae]
and other genera of Polygonaceae elsewhere. Widespread in Britain.
Also recorded in the Republic of Ireland. Widespread in continental
Europe. Also recorded in Morocco, Algeria, Tunisia, Syria, Israel,
Korea, China and Japan.
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Pegomya
bicolor (Wiedemann, 1817) [Diptera: Anthomyiidae]. |
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