| Booklice (Psocid) |
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Eggs are generally laid within foodstuffs when psocids are found indoors. Incomplete metamorphosis life-cycle characterises the development of all psocids, with nymphal stages (of which there are usually 3 - 7) closely resembling the adult form. Full life cycle can proceed in 6 to 8 weeks under optimum conditions (20° - 25°c). Rarely cause direct damage by feeding, psocids are relatively innocuous in small numbers. When found in larger numbers however, significant damage may result from their activities and presence. Psocids may spread micro organisms from one area to another and cause spoilage of stored food by this means. Psocids are almost always associated with damp conditions and indeed require damp environments to survive. Disposal of infested foodstuffs, and drying of infested areas may provide adequate means of control. In more problematic situations, residual insecticide use many be necessary. |
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