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British Culicoides

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Culicoides (Oecacta) truncorum (Edwards)

Photograph of wing at right: click to enlarge.

• Culicoides truncorum Edwards (1939): 41, 139. Great Britain
• (Gutsevich 1960: 87. , , notes, figs)
• (Kremer 1966: 176. , , notes, figs, as sylvarum)
• (Glukhova 1979: 210, larva)
• (Boorman 1984: 165. , note, synonymy)
• (Delecolle 1985: 146. , , notes, figs)
• (Glukhova 1989: 265. , , notes, figs)
• (Remm & Zhogolev 1968: 840 (511). Note, record, Crimea, as sylvarum)
• (Orszagh 1973: 894. Record, note, figs, Czechoslovakia, as sylvarum)

• Culicoides sylvarum Callot & Kremer 1961: 389. France
• (Callot & Kremer 1961: 389. , , desc, figs)

Diagnosis & Notes:

In their paper dividing truncorum into two species, Callot & Kremer (1961) described their new species sylvarum as having 15-16 mandibular teeth and the maxillae around twenty, and being found breeding in tree holes (that is, truncorum) while the species they described in the same paper as truncorum is described as having no teeth on the maxillae and their larvae came from a bog (that is, clintoni).The two forms of which they described the male genitalia from Edwards’ paper both refer to truncorum.

Both maxillae and mandibles have teeth. The species recorded by Remm and Zhogolev (1968) as sylvarum was probably truncorum, since they mention the “dentate jaws”. Those recorded by Orszagh were also probably truncorum as he mentions that the mandibles have twelve teeth, but does not mention the maxillae. The species described by Kremer (1966) as sylvarum was in fact truncorum, as he states that the maxillae always have teeth and the species always breeds in tree holes.

The wing is pale, with vague pale spots as in clintoni; one over the cross-vein, one just beyond the second radial cell, and spots at the margin of the wing in r5, m1, m2, cuy and an. The AR is 1.24-1.34; the SD is 3,5,7,9,11-15. The male genitalia have the ventral root foot-shaped, the ninth tergite with a shallow notch on the posterior margin.

The figure of the wing is from Delecolle (1985) and of the male genitalia from Edwards (1939).

Biology:

This species breeds in tree holes, often in company with C. fagineus.

Distribution:

Britain, France, Spain, Estonia and Russia.

Medical and Veterinary Importance:

Nothing known.

British Culicoides

Contents | Introduction | References

back to main site | Arbovirology Modelling and Entomology