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Mesopsocus unipunctatus (Mueller, 1764)

Uncommon in Britain and Ireland.

Photo of Mesopsocus unipunctatus

Region Main date range Extreme dates
North Mid June - Late July 5 June - 23 August
South Unknown 5 May - 14 September

Summary: found mainly on branches of deciduous and coniferous/evergreen trees/bushes.


  • Deciduous branches: apple, alder, ash, birch, blackthorn, bramble, elder, elm, hawthorn, hazel, maple, oak, pear, plum, snowberry, sycamore and sea buckthorn.
  • Deciduous trunks: beech and sycamore.
  • Conifer/evergreen branches: cedar, gorse, juniper, larch, pine and yew.
  • Other microhabitats: heather, marram grass, palings, pigeon’s nest, swept grassland and walls.

Sampling techniques: beating branches, brushing tree trunks, hand searching and sweep netting.


Centre for Ecology and Hydrology Joint Nature Conservation Committee National Biodiversity Network