| Lachesilla pedicularia | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Psocodea |
| Family: | Lachesillidae |
| Genus: | Lachesilla |
| Species: | L. pedicularia |
| Binomial name | |
| Lachesilla pedicularia | |
Lachesilla pedicularia is a species of Psocoptera from the family Lachesillidae. [1] It is commonly known as cosmopolitan grain barklouse or cosmopolitan grain psocid and, as these names suggests, it has an almost cosmopolitan distribution. [2]
Lachesilla pedicularia is 1.5-2 mm long. It is often macropterous (with long wings), but brachypterous (with short wings) individuals also occur. [3]
Some features distinguishing this from other species of Lachesilla are the abdomen having brown stripes, the forewing being hairless, wing vein R1 meeting the wing edge almost at a right angle, and several other wing veins being marked with brown. [3]
There are also features in the genitalia. The subgenital plate of females forms a simple curved shape, while the hypandrium of males has simple (not forked) appendages. [3]
This species occurs on the trunks and (to a lesser extent) branches of a range of trees, including beech, birch, broom, oak, pine, spruce, and yew. [1] It is also known from haystacks, straw bales, nests of robins, barns, houses, and stored grain. [1] [2]