Mesopsocidae
Pearman, 1936
Middle Barklice
Genus Guides
1is a of barklice within the order Psocodea, suborder Psocomorpha. The family contains over 70 described and is distinguished by a key morphological feature: a free areola postica in the wing venation. Members are small, soft-bodied insects commonly found in association with vegetation and bark surfaces.


Pronunciation
How to pronounce Mesopsocidae: /mɛˌsɒpˈsɒsɪdiː/
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Identification
Distinguished from other Psocomorpha by the free areola postica in forewing venation. This contrasts with families where the areola postica is connected to other . Additional diagnostic features require microscopic examination of wing venation and genitalia.
Images
Appearance
Small, soft-bodied insects with membranous wings when present. The defining feature is a free areola postica—a detached or isolated in the anal region of the forewing, not connected to M or Cu1a. Body form generally slender with long . Wing venation patterns otherwise reduced compared to some other psocopteran .
Habitat
Vegetation surfaces including leaves, bark, and twigs. Associated with arboreal and shrub-layer environments where humidity and organic debris support microfloral growth.
Distribution
Recorded from Europe (Denmark, Norway, Sweden) with broader distribution implied by -level occurrence across temperate regions. Specific range data for most remains limited.
Diet
Feeds on microfloral components including lichens, , fungal spores, and detritus adhering to plant surfaces.
Life Cycle
Hemimetabolous development with , nymph, and stages. Detailed information for specific is not well documented.
Behavior
Gregarious tendencies observed in related psocopterans; specific behavioral studies for are limited.
Ecological Role
Contributes to nutrient cycling through consumption of detritus and microflora on vegetation surfaces. Serves as prey for small in and understory .
Human Relevance
No direct economic significance. Occasionally encountered in biodiversity surveys and ecological monitoring of vegetation .
Similar Taxa
- Other Psocomorpha familiesDifferentiated by wing venation; uniquely possesses a free areola postica while related show connected or venation patterns.
More Details
Taxonomic note
established by Pearman in 1936. The free areola postica is considered a derived character state within Psocomorpha and serves as the primary diagnostic feature for the family.