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Pegomya
betae (Curtis, 1847) Anthomyia
betae Curtis, 1847. Jl R. agric. Soc. (London) 8:
412 |
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| Leaf-miner: Blotch mines, generally occupying an entire leaf, usually containing several larvae. Much, half deliquescent, green frass (Bladmineerders van Europa). Mine indistinguishable from P. exilis or P. hyoscyami (Bladmineerders van Europa). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 eggs and larvae are described by d'Aguilar and Missonier (1957 and 1962). The mandibles have a number of teeth, of varying size; the angle between the termainal and the penultimate teeth is almost straight, not sharp as in P. hyoscyami (d'Aguilar and Missonier, 1957a, 1962a) (Bladmineerders van Europa). |
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| Puparia: 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). Reddish brown, in the soil. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Adult: The adult is illustrated in the Encyclopedia of Life. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Comments: A notorious pest of beet. Pegomya exilis and Pegomya cunicularia were distinguished from Pegomya betae and Pegomya hyoscyami by Michelsen (1980). Material of both [the former species] had previously been assigned to those [two latter] species (Chandler, pers. comm.). Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time of year - mines: June. Time of year - adults: Two-three generations per year. Distribution in Great Britain and Ireland: Britain including Warwickshire (Coventry, Holbrooks) (Robbins, 1991: 36); Anglesey, Caernarvonshire, Cardinganshire, Easterness, North Essex, Orkney, South Devon, South-west-Yorkshire and West Perthshire (NBN Atlas). Also recorded in the Republic of Ireland (Michelsen in Fauna Europaea). Distribution elsewhere: Widespread in continental Europe including The Netherlands (Bladmineerders van Europa), Czech Republic, Denmark, Finland, Germany, Hungary, Lithuania, Norwegian mainland, ? Poland, Russia - North, Slovakia and Sweden (Michelsen in Fauna Europaea). Also recorded in East Palaearctic and Nearctic Regions (Michelsen in Fauna Europaea). NBN Atlas links to known host species: British and Irish Parasitoids in Britain and elsewhere:
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| External links: | Search the internet: | |
| Biodiversity Heritage Library Bladmineerders van Europa British leafminers Encyclopedia of Life Fauna Europaea NBN Atlas NHM UK Checklist |
Bladmineerders van Europa British leafminers Encyclopedia of Life Fauna Europaea NBN Atlas NHM UK Checklist |
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| Last updated 10-Jul-2019 Brian Pitkin |  |
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