Dip:Agromyzidae
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Chromatomyia horticola (Goureau, 1851)
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pupation is in the mine

 

Food Plant: A polyphagous species, favouring Asteraceae, Brassicaceae and Fabaceae

Mine: Bivoltine, late Spring and early Autumn

Pupa: at the end of the mine, usually lower surface of the leaf

Notes: A long whitish upper surface corridor, which eventually goes lower surface, with scattered frass grains. . Mine shown on Peas, with puparium at the end of the mine..

There are two polyphagous miners which form indistinguishable mines on a large number of plant species. These are Chromatomyia syngenesiae and Chromatomyia horticola and together these comprise C.'atricornis'. The adults need to be bred to identify this species. Both form pupae in the mine and the mines are long and twisting. Chromatomyia syngenesiae are almost exclusively found on the Asteraceae and British records of C.syngenesiae, horticola or 'atricornis' on hosts other than Asteraceae in Britain, are assumed to represent horticola. Records on Asteraceae hosts which are not based on breeding the adults may be either C.horticola or C.syngenesiae.

Data: 02.vii.2013, Downham Market, Norfolk, VC28

Image:© Rob Edmunds

sponsored by Colin Plant Associates (UK) LLP/Consultant Entomologists

www.leafmines.co.uk