The influence of five cucurbit hosts on survival, developmental time, and adult weight of the squash bug,Anasa tristis(De Geer), was determined. Percentage survival from egg to adult was significantly affected by host. Survival to the adult stage on the five hosts was highest on pumpkin,Cucurbita pepoL. var.pepo(70.0%), followed by squash,Cucurbita pepoL. var.melopepo(49.0%); watermelon,Citrullus lanatus(Thunb.) Matsum.&Nakai (14.4%); cucumber,Cucumis sativusL. (0.3%); and muskmelon,Cucumis meloL. (0%). Host type had a significant effect on developmental time to third and fifth instar and to adult, with a longer developmental time on watermelon. The adult sex ratio was 1:1. Adult females were significantly heavier than males. Greater adult weights for both males and females resulted when insects developed on squash. However, the effect of host on adult weight was significant only for males.