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Xanthogramma pedissequum

 
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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: Xanthogramma pedissequum Reply with quote

Xanthogramma pedissequum (Harris, [1776])

Identification ease/difficulty: 2

Sources of information
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Last edited by stuart on Sun Jan 22, 2006 11:15 am; edited 3 times in total
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stuart
Site Admin


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.

Xanthogramma pedissequum (Harris, 1776)

Biology: The larvae have been found in the galleries of the ant Lasius niger under a stone in a limestone quarry, in which the root aphid Forda formicaria was also present (Foster, 1987). Another record from a nest of the same ant species records the presence of a different root aphid, Trama sp. (Dixon, 1960). The species overwinters as larvae. It is found in flowery and grassy places including waste ground, disused railways, canal banks, gardens and woodland rides and edges. It does not show such a strong preference for calcareous localities as X. citrofasciatum, and there are a few records from acid grassland and wetlands.

Distribution: Local and usually scarce. About three times as many records have been submitted to the recording scheme for this species than for X. citrofasciatum, these being concentrated in southern England south of a line from the Severn to the Wash, and in South Wales. There are scattered records north of this, but it must be regarded as rare in North Wales and northern England. There are very few Scottish records, but one recent one from a shingle island in the River Tay in central Scotland.
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