Dip:Agromyzidae
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Phytomyza krygeri Hering, 1949
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seedcapsule discolours

Food Plant: Aquilegia vulgaris (Columbine)

Egg: on the petals

Mine: March-June

Notes: The larva feeds in the seed capsules and pupariation occurs in the seed head, with one puparium occuring in each seed capsule. The larva is bright yellow and during development may leave one seed capsule and enter another, seen by congruent holes in adjacent seed capsules. The affected seed capsules discolour and become brown (as shown). The puparium is deep brown with all segments having a row of stout spinules, which are most prominent in the anal region. The posterior spiracles are strongly chitinised.

Data: 04.vii.2018, Hessle, South-east Yorkshire, VC61

Image:© Barry Warrington

Recording Grade: 5

References:
Lonsdale, O (2017), Phytomyza krygeri Hering (Diptera: Agromyzidae), a new invasive species for North America on columbine, J. ent. Soc. Ont. 148: 13–21
Spencer K A (ed.), (1968). Erich M. Hering: Briefe über Blattminierer. Junk, ‘s Gravenhage
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
Spencer, K A (1990). Host specialization in the World Agromyzidae (Diptera)

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