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Xylota abiens

 
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stuart
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Joined: 11 May 2005
Posts: 737
Location: Peterborough, UK

PostPosted: Sat May 28, 2005 5:39 pm    Post subject: Xylota abiens Reply with quote

Xylota abiens Meigen, 1822

Identification ease/difficulty: 3

StatusHabitat indicator statusSources of information
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stuart
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Joined: 11 May 2005
Posts: 737
Location: Peterborough, UK

PostPosted: Sun May 29, 2005 8:41 am    Post subject: Species account from the Provisional atlas Reply with quote

Species account from Provisional atlas of British hoverflies, Ball & Morris, 2000.

Xylota abiens Meigen, 1822

Biology: The Larvae has been found in the wet, decaying roots of a * stump. It is associated with over-mature, deciduous woodland and usually occurs close to water. Adults sun bathe on stumps and fallen logs in small clearings or can be found running about over vegetation in dappled sunlight. As with many of the species of this genus, it is not often found visiting flowers

Distribution: A scarce species recorded mainly from south-east England, but with scattered records north to Lancashire and Durham
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stuart
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Joined: 11 May 2005
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Location: Peterborough, UK

PostPosted: Sun May 29, 2005 9:08 am    Post subject: Data sheet from National Review of Diptera, Falk, 1991 Reply with quote

Datasheet from the Review of Scarce and Threatened Diptera, Falk (1991).

XYLOTA ABIENS Meigen NOTABLE

DISTRIBUTION Widely recorded in southern England with records as far north as Norfolk, Cheshire and possibly Durham (needs confirmation).

HABITAT Broadleaved woodland, especially close to streams and sometimes in carr and fens where there has been a continuity of the breeding resource. There is a requirement for old diseased trees and dead wood.

ECOLOGY Larvae have been reared from the rotten cavity at the base of an oak trunk and it is possible that other trees may be used such as alder. Adults recorded from May to September and may be found on sunlit foliage and tree trunks.

STATUS Very local, though widely distributed in the south, and not quite as rare as formerly believed, with about 50 known post 1960 sites. Quite frequent at some ancient woodland sites (Windsor, New Forest) and fens such as Chippenham.

THREAT The clearance of old woodland for agriculture and intensive forestry and removal of dead wood and old or diseased trees.

MANAGEMENT Retain any old or diseased trees and dead wood within a site ensuring a continuity of these resources in the future. Maintain open rides and clearings.
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