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Melangyna ericarum

 
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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: Melangyna ericarum Reply with quote

Melangyna ericarum (Collin, 1946)

Identification ease/difficulty: 4

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.

Melangyna ericarum (Collin, 1946) Syrphus ericarum Collin in Coe (1953)

Biology: The larvae unknown. Associated with native Pinus woodlands in the Scottish Highlands. Adults can be swept or found visiting flowers in open rides where they fly low down over the bare edges of tracks and clearings

Distribution: A species of the Caledonian pine forests of Scotland, although there is some evidence of a spread southwards in pine plantations
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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 9:09 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).

MELANGYNA ERICARUM (Collin) RARE

DISTRIBUTION Mainly recorded from the Scottish Highlands (Aberdeenshire, Easterness, Elgin and Sutherland). There is also a record from Bernwood Forest in Oxfordshire (1980/81) which is quite remarkable and somewhat dubious.

HABITAT Exact requirements unclear as it has been found in Scottish pine woods and in birch carr and marshland away from conifers.

ECOLOGY Larvae aphidophagous though on what species is unknown. Adults recorded from June to October.

STATUS A poorly known species which has been somewhat misinterpreted in the past and could be under recorded. It appears to be a speciality of the Scottish Highlands and the Oxfordshire specimen (supposedly taken with the essentially Scottish Metasyrphus nielseni) should be treated with some suspicion. Post 1960 records include Morrone Birkwood NNR, Aberdeenshire (1971); Boat of Garten, Elgin (1966) and Loch an Eileen, Easterness (1981). This species is not listed in Shirt (1987).

THREAT Clearance of native woodland in the Scottish Highlands and replacement with intensive forestry. Over grazing by deer can lead to a loss of a ground vegetation which could be detrimental to this species.

MANAGEMENT Maintain an open structure of birch and pine trees in native woodland. A mosaic of ground vegetation types (using fenced enclosures to exclude deer) could benefit this species and other invertebrates.
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