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EUPATORIUM. Hemp-agrimony [Asteraceae]

Hemp-agrimony (E. cannabinum) is the only species of Eupatorium recorded in Britain. Nine dipterous miners, the agromyzids Calycomyza artemisiae, Chromatomyia 'atricornis', Liriomyza eupatoriana, Liriomyza eupatorii, Liriomyza strigata and Phytomyza eupatorii and the tephritids Stemonocera cornuta, Trypeta artemisiae and Trypeta zoe are recorded on Eupatorium in Britain. The agromyzids Liriomyza sativae and Liriomyza trifolii, polyphagous pest species of ornamental and vegetable crops occasionally intercepted at UK points of entry, are recorded on Eupatorium. Liriomyza trifolii has been found under glass in England and Wales. All populations have been and continue to be eradicated. The agromyzid Melanagromyza eupatorii is recorded boring the stems of Eupatorium in Britain and elsewhere. Elsewhere the agromyzids Calycomyza artemisiae, Chromatomyia 'atricornis', Liriomyza eupatoriana, Liriomyza eupatorii, Liriomyza sativae, Liriomyza strigata, Liriomyza trifolii and Phytomyza eupatorii and the tephritids Stemonocera cornuta and Trypeta zoe are recorded mining Eupatorium. Three non-dipterous miners are recorded on Eupatorium in Britain (see below). Elsewhere one additional British miner is recorded on Eupatorium (see below).

Hemp Agrimony - Eupatorium cannibinum.

Key for the identification of the known Diptera mines in Britain.

1> Blotch mine. 2. -> Corridor mine. 3. 2> Larva forming whitish/greenish blotch. Pupation external, on the ground. Puparium reddish-brown Mine of Calycomyza artemisiae on Artemisia vulgaris. Image: Willem Ellis (Source: Nederlandse bladmineerders) Calycomyza artemisiae (Kaltenbach) [Agromyzidae]. -> Blotch mine. Pupation external. Puparium yellow Mine of Stemonocera cornuta on Eupatorium cannabinum. Image: Willem Ellis (Source: Nederlandse bladmineerders) Stemonocera cornuta (Scopoli) [Tephritidae]. -> Blotch mine. Pupation external. Puparium yellow Mine of Trypeta artemisiae on Artemisia vulgaris. Image: Willem Ellis (Source: Nederlandse bladmineerders) Trypeta artemisiae (Fabricius) [Tephritidae]. -> Mine filling apex of leaf segment, with short final section extending further into leaf. Pupation normally in leaf at end of mine. Liriomyza eupatoriana Spencer [Agromyzidae]. 3> Mine primarily associated with the mid-rib. 4. -> Mine not primarily associated with the mid-rib. 5. 4> Corridor mine following the mid-rib, with lateral offshoots. Puparium yellow Mine of Trypeta zoe on Artemisia vulgaris. Image: Willem Ellis (Source: Nederlandse bladmineerders) Trypeta zoe Meigen [Tephritidae]. -> A distinctive mine primarily above mid-rib, with irregular short lateral offshoots into leaf blade. Pupation external.     Mines of Liriomyza strigata on Sonchus. Image: Crown copyright - courtesy of CSL Liriomyza strigata (Meigen) [Agromyzidae]. 5> Mine linear, whitish, both upper and lower surface. Pupation internal, at the end of the mine, with the anterior spiracles projecting through the epidermis. Mine of Chromatomyia atricornis on Sonchus olearaceus. Images: Willem Ellis (Source: Nederlandse bladmineerders) Chromatomyia 'atricornis' auctt. [Agromyzidae]. -> A linear mine commencing with a conspicuous regular spiral and then continuing a considerable distance more or less straight. Mine of Liriomyza eupatorii on Eupatorium cannabinum. Image: Willem Ellis (Source: Nederlandse bladmineerders) Liriomyza eupatorii (Kaltenbach) [Agromyzidae]. -> Mine long, linear, upper or lower surface, often adjoining a vein. Puparium black Mine of Phytomyza eupatorii on Eupatorium cannabinum. Image: Willem Ellis (Source: Nederlandse bladmineerders) Phytomyza eupatorii Hendel [Agromyzidae].

Mines on Hemp Agrimony (Eupatorium cannabinum)

Non-dipterous miners recorded on Eupatorium in Britain Coleophora conyzae Zeller, 1868 Lepidoptera: Coleophoridae Coleophora follicularis (Vallot, 1802) Lepidoptera: Coleophoridae Digitivalva pulicariae (Klimesch, 1956) Lepidoptera: Acrolepiidae   Additional British non-dipterous miners recorded on Eupatorium elsewhere Coleophora inulae Wocke, 1877 Lepidoptera: Coleophoridae

Last updated 20-Aug-2008  Brian Pitkin

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