Females of species predatory as adults, Chrysopa commata Kis & Ujhelyi, C. oculata Say and C. perla (L.), and also species not predatory as adults, Chrysoperla carnea (Stephens), laid more eggs on clean substrates, than on those exposed previously to conspecific or heterospecific first-instar larvae. Substrates contaminated with oviposition-deterring allomones (ODAs) deterred females of C. oculata most. On the average the deterrent effects of substrates contaminated by larvae of C. oculata or C. perla were greater than those contaminated by C. carnea or C. commata. Results indicate that both intra-and interspecific responses to ODA occur in chrysopids and may enable them to distribute their larvae more uniformly between prey patches.