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(Coleoptera, Diptera, Hymenoptera and Lepidoptera)
by
Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds
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PERSICARIA.
Bistorts, Knotweeds, Persicarias and Water-peppers. [Polygonaceae]
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Twenty-four
species of Persicaria are recorded in Britain. These include
the native Alpine Bistort (P. vivipara), Amphibious Bistort
(P. amphibia), Common Bistort (P. bistorta), Pale
Persicaria (P. lapathifolia), Redshank (P. maculosa),
Small Water-pepper (P. minor), Tasteless Water-pepper (P.
mitis) and Water-pepper (P. hydropiper). The BSBI provide a downloadable plant crib for Persicaria, riparian species.
Three British miners are recorded on Persicaria.
A key to the European miners recorded on Persicaria is provided in Bladmineerders van Europa.
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Amphibious Bistort
Persicaria amphibia
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Key for the identification of the known mines of British
insects (Diptera and non-Diptera) recorded on Persicaria
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1a > 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 possibly Begonia (record ambiguous) 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]. |
1b > Leaf-miner: Linear mine, becoming a blotch. Two or more larvae feeding
together. Frass in lines. |
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Pegomya
solennis puparium
Image: © Willem Ellis (Bladmineerders van Europa) |
On
? Oxyria, ? Polygonum and Rumex, but not yet Persicaria, in Britain
plus Emex and Persicaria elsewhere. Widespread in
Britain. Also recorded in the Republic of Ireland. Widespread
in continental Europe.
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Pegomya
solennis (Meigen, 1826) [Diptera: Anthomyiidae]. |
1c >
Leaf miner: Blotch mine. Broad corridor, widening into a large transparant blotch
with 1 or several, proportionally very large larvae that quickly
completely mine out a leaf, then move to another leaf. At the start
of the first mine at the leaf underside 1 or more oval egg shells.
Pupation outside the mine |
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On Convolvulus and Fallopia, but not yet Persicaria, in Britain and Fallopia and possibly Persicaria elsewhere. Uncommon in England
- Warwick, Oxford, Hants and West Kent. Widespread in continental
Europe.
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Pegomya
setaria (Meigen, 1826) [Diptera: Anthomyiidae]. |
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