Dip:Agromyzidae
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Calycomyza humeralis (von Roser, 1840)
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FORMS A WHITISH BLOTCH MINE

Food Plant: Aster, A.tripolium (Sea Aster), Bellis (Daisy), Erigeron (Fleabane), E.canadensis (Canadian Fleabane)

Mine: Early Summer and Autumn

Pupa: inside the mine

Notes: The initial gallery by the first instar larva then leads to a whitish circular or oval upper surface blotch. The puparium is firmly fixed to the inside of the mine by an accumulation of frass. A widespread but local miner. Mine shown on Bellis (Daisy). On Sea Aster (A.tripolium) the mines appear pinkish (B.Warrington, pers.comm.).

Data: 03.xI.2018, Downham Market, Norfolk, VC28

Image:© Rob Edmunds

Recording Grade: 2

References:
Hering, M (1957) - Bestimmungstabellen der Blattminen von Europa.
Papp L & Cerný M (2017), Agromyzidae (Diptera) of Hungary. 3. Phytomyzinae 2.
Robbins, J (1990) - A Provisional Atlas of The Leaf Miners of Warwickshire.
Spencer, K A (1976) - The Agromyzidae of Fennoscandia and Denmark.
Spencer, K.A (1972) - "Diptera: Agromyzidae" Handbooks for the Identification of British Insects, Royal Entomological Society of London.

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