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| Amauromyza
verbasci (Bouché,
1847) [Diptera: Agromyzidae] |
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Agromyza
verbasci Bouché, 1847. Stettin. ent. Ztg. 8(5):
143 |
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Leaf-miner: A linear-blotch mine, often with several mines occurring in the same leaf (Spencer, 1976: 167, fig. 305). A short, mostly upper-surface, rarely partly lower-surface corridor leads to a large, upper-surface, primary blotch. The mine initially is pale, turns brown later. Frass in sizeable dispersed grains. Pupation outside the mine; the larva leaves the mine through a semicircular exit slit in the upper epidermis (Bladmineerders van Europa). Upper surface variable mine, from a short gallery leading to a large, roundish blotch to a long gallery leading to an elongated blotch (British leafminers). Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts, although they do have a characteristic cephalo-pharyngeal skeleton (see examples), usually visible internally through the body wall. The larva is described by de Meijere (1925), Dempewolf (2001: 104) and illustrated in Bladmineerders van Europa. Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages, wings and legs are not visible externally (see examples). Orange-yellow; posterior spiracles each with 3 bulbs (Spencer, 1976: 167). Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time of year - mines: August. Time of year - adults: May-August. Distribution in Great Britain and Ireland: Recorded in Kent (Dartford), Surrey (Kew), Isle of Wight (Spencer, 1972b: 45) and Warwickshire (Coombe and Kingsbury Wood) (Robbins, 1991: 101, as lamii); Glamorgan and South Lancashire (NBN Atlas). Distribution elsewhere: Widespread in continental Europe, including Denmark, Finland, Norway, Sweden, the Mediterranean area (Spencer, 1976: 158), The Netherlands (Bladmineerders van Europa), Corsica, Estonia, French mainland, Germany, Hungary, Italian mainland, Poland, Romania, Sardinia, Sicily, Spanish mainland and Yugoslavia (Fauna Europaea). NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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| Last updated 28-Mar-2018 Brian Pitkin |  |
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