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National Barkfly Recording Scheme (Britain and Ireland)
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Trichopsocus dalii
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Species account
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A moderately small (c.2.5-3.5mm) whitish barkfly. Uncommon in Britain.
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The forewing can appear superficially like an Ectopsocus species due to the dark
marks around the edge of the wing (but Ectopsocus species do not have an areola
postica cell). The areola postica often has an almost semi-circular shape (cf. T.
clarus).
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The Cu1 vein on the hind wing has a dark patch that extends either side of the vein.
Very pale specimens are not uncommon and this dark mark may be absent.
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Female
The internal spermatheca opening is visible as a round brown circle near the apex of the abdomen (cf.
T. clarus which does not have a visible opening).
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Male
The internal phallosome is clearly visible (cf. T. clarus which has a phallosome that is only faintly visible and of a different shape).
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