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Cerodontha hammi Spencer, 1971
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Food Plant: Elymus repens (Couch Grass), Zea mays (Sweetcorn)

Mine: October (adult bred - emerged 14.iii.2018). Seems to be univoltine.

Notes: The mine is at the tip of the leaf and the frass is large and granular. Pupariation is within the leaf and a puparium can be seen (top right). Several larva mine together. The adults are similar to those of Cerodontha incisa and the differences are in the thickness of the jowls.

Data: 21.x.2017, Downham Market, Norfolk, VC28

Image:© Rob Edmunds

Recording Grade: 5

Spencer, KA (1971) - Cerodontha (Poemyza) hammi sp. n in 'Notes on a revision of the British Agromyzidae (Diptera) including the description of 14 new species', Entomologist's Gazette, 22, p157-158
Spencer, K A (1972) - "Diptera: Agromyzidae" Handbooks for the Identification of British Insects, Royal Entomological Society of London
Spencer, K A (1976) - The Agromyzidae of Fennoscandia and Denmark

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