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Cheilosia species B

 
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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: Cheilosia species B Reply with quote

Cheilosia species B sensu Stubbs & Falk, 1983

Identification ease/difficulty: 5

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.

Cheilosia species B sensu Stubbs, 1983

Biology: Unknown

Distribution: A single specimen was taken by Ian MacGowan on the banks of the River Dee at Ballater, central Scotland in 1981
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stuart
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Location: Peterborough, UK

PostPosted: Sun May 29, 2005 9:09 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).

CHEILOSIA SP.B. Stubbs and Falk ENDANGERED

DISTRIBUTION Only a single specimen known from the banks of the River Dee at Ballater in Scotland in late May 1981.

HABITAT Lushly vegetated riverbanks with sweet cicely Myrrhis odorata and a range of thistles and other composites.

ECOLOGY Larvae almost certain to be phytophagous and probably on composites such as thistles Carduus and Cirsium or butterbur. The adult was taken on the flowers of sweet cicely.

STATUS The taxonomic status of this specimen should be noted. It closely resembles the European Cheilosia rufimana, but differs in a number of important features which raises the possibility of this representing an entirely new species. It has not been found on subsequent visits to the site and may have a limited flight period. Status revised from RDB3 (Shirt 1987).

THREAT River improvement schemes along parts of the Dee could destroy the lushly vegetated river banks, and the site of capture is only just outside the town and is thus vulnerable to recreational pressure or disturbance.

MANAGEMENT Maintain the richly vegetated river banks free from excessive disturbance and rich in composites and umbelliferae.
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