| National Barkfly Recording Scheme (Britain and Ireland) |
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Psococerastis gibbosa |
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Species account |
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A large (c.6.5-8mm) barkfly; the largest species found in Britain and Ireland. In the field the combination of large size and mainly colourless wings makes the species easily recognisable. Uncommon but widespread. |
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The apical segment of the maxillary palp is short (c.2.5 times as long as wide). The similarly large sized species, Metylophorus nebulosus, has a much longer apical segment (c.5 times as long as wide).
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Female
The female forewing is distinct from other species by the dark marks in the apical part of the wing. |
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Female
The subgenital plate has a characteristic ‘T’ shape. |
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Male
The male forewing is less distinct than the female since it lacks the dark marks in the apical part of the wing. |
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Male
The hypandrium (apex of abdomen) is asymmetrical; the right hand edge has a row of denticles (small teeth). |
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