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Xylota tarda

 
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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 tarda Reply with quote

Xylota tarda Meigen, 1822

Identification ease/difficulty: 4

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 tarda Meigen, 1822

Biology: The larvae have been found in a sap run near the base of Populus tremula. They are usually found in damp situations in woodland, at the edges of wet woodland, or near streams, but nearly always where over-mature trees are present. Adults run rapidly over sunlit foliage of bushes and trees or bask on stumps and bare ground. Rarely visits flowers

Distribution: A scarce species mainly found in the Midlands and southern-central England, but with scattered records north to the Scottish Highlands
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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 TARDA Meigen NOTABLE

DISTRIBUTION A disjunct distribution with most records for southern England up to the Midlands and also in the Scottish Highlands from Perthshire to Sutherland.

HABITAT Broadleaved woodland usually at the edges of wet woods or near streams, and also adjacent to heathlands and it is recorded regularly in both lowland and upland sites. The presence of dead wood such as stumps or logs or old and diseased trees is a requirement.

ECOLOGY Larvae developing in dead wood, with the wood of birch and aspen likely to provide the preferred breeding sites, though other broadleaved trees are probably also utilised. Adults recorded from June to August and have been observed feeding on umbels.

STATUS A very local but widely distributed species with about 25 known post 1960 sites. It used to be locally frequent along Speyside, but recent records are relatively few. It may be under recorded to some extent through a close resemblance to small individuals of the common X. segnis.

THREAT The clearance of old woodland sites or the removal of old trees in heathy areas for agriculture or afforestation, and the removal of the old or diseased trees and dead wood.

MANAGEMENT Retain all old or diseased trees and any dead wood in a site and ensure a continuity of these in the future. Maintain the presence of open open rides and clearings with flowers for adult feeding.
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