Predation by green lynx spider,Peucetia viridans(Hentz), was studied on cotton and woolly croton plants in East Texas. This species feeds both diurnally and nocturnally.P. viridanswas observed feeding on insects of orders Diptera, Hymenoptera, Heteroptera, Homoptera, Coleoptera, Lepidoptera, Neuroptera, and Odonata, as well as on several spider species. Predaceous arthropods (e.g.,Hippodamia convergensGuérin-Méneville, Coccinellidae;Chrysoperla rufilabris[Burmeister], Chrysopidae) constituted more than half of the spiders' diet. In cotton,P. viridanswas found to be a predator of the pestsHeliothis zea(Boddie) andAlabama argillacea(Hübner) (together 8% of the spiders' prey). Size of killed prey in cotton ranged between 0.14- and 1.3-fold the spiders' size (average prey length, 5.90 ± 0.99 mm). On woolly croton plants,P. viridanswas often seen feeding on cotton fleahopper,Pseudatomoscelis seriatus(Reuter) (numerically almost 30% of the spiders' prey), which is a key pest in cotton. It was estimated that on cotton and croton plants in East Texas, oneP. viridanscaptured an average of less than one prey daily. Our results are compared with data in the literature on the diet ofP. viridans