Psocids/Booklice

Scientific name: Liposcelis spp.

Distribution

Worldwide

Secondary pest, scavenger, feeds on mould

Adults are 0.7–1.0 mm in length, dorsoventrally flattened, wingless, the femur of hindleg enlarged. Translucent to pale brown in colour.

The optimum conditions for development are 30℃ and 80% relative humidity. The females lay eggs on commodities. Adults and nymphs are long-lived.

Dried material of plant and animal origin, especially if slightly damp.

Medium to high in museums, herbaria, in households, and sometimes in bulk and bagged grains.