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Liposcelis bostrychophilus Badonnel ate eggs but not 1st-stage larvae of Xyletinus peltatus (Harris) (Coleoptera: Anobiidae). At a ratio of 1 psocid per 1.25 eggs, psocids ate 71.7% of the beetle eggs in the absence of other food, and 33.3% when other food was available. As psocid numbers increased, total consumption of beetle eggs increased proportionately. L. bostrychophilus apparently eats about 5% of the beetle eggs under natural conditions, and thus may be slightly beneficial in limiting most natural infestations. Other psocids found associated with beetle-infested wood were Rhyopsocus phillipsae Sommerman and Tapinella prob. africana Badonnel (Psocoptera: Psoquillidae and Pachytroctidae, respectively).