1. Coupling of the pairs is effected by attaching the hook of the aedeagus under a sclerite of the female genital chamber, hooking toothed plates into pits of the genital chamber, and by spines on the endophallus diverticles.

2. Bisinuate-with two incisions Emarginate-cut out along margin Epistomal canthus-a chitinous process more or less completely dividing the eyes into an upper and lower half Epistomal sinuation-wavy or undulating oral margin or sclerite directly behind the labrum (upper lip)

3. They described briefly the anterior margin of the sternum and the prosternal process, and use the term "closed Coxal cavity" when the prothoracic sclerites expand behind the coxae, and "open Coxal cavity" when the sclerite that closes behind the prothoracic Coxal cavity is the mesothorax.

4. Other articles where Booklouse is discussed: insect: Annotated classification: Order Psocoptera (booklice or psocids) Small or minute insects with long filiform antennae, delicate membranous wings (though many are wingless), head with Y-shaped epicranial suture, enlarged post-clypeus (sclerite on the face); maxilla with a rodlike lacinia (inner lobe) partly sunk into head capsule; labial palps

5. Bisinuate-with two incisions Carinate-keeled or having raised lines Convex-curved or rounded outward Elytra-the forewings of beetles Frons-the upper anterior portion of the head capsule, usually a distinct sclerite (any plate on the body wall) between the epicranium (upper part of the head) and clypeus (part of head below the frons)