| National Barkfly Recording Scheme (Britain and Ireland) |
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Mesopsocus immunis |
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Species account |
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A moderately large (females – c.4-4.5mm; males – c.4.5-5.5mm) barkfly. The females have tiny wings (micropterous), the males have long wings (macropterous). Uncommon in Britain and Ireland. |
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The forewings of all Mesopsocus species are glabrous (i.e. completely hairless). Four vein portions meet, or almost meet, at a point where veins Rs and M join. |
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Female
The relative large size of females of M. immunis (and M. unipunctatus) makes them conspicuous in the field. The tiny wing ‘stumps’ can be seen in the photo. The patterning of the body can be very variable but compared to
M. unipunctatus there is often a pale yellow background colour. |
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Female
The subgenital plate has an apical lobe that tapers to a narrow point. |
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Male
The phallosome has the end lobes strikingly long and without side lobes. |
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