DIEL PATTERNS OF LARRA BICOLOR (HYMENOPTERA: SPHECIDAE) IN PUERTO RICO

Behavioral observations of Larra bicolor F., a sphecid parasitoid of Scapteriscus mole crickets, made in Puerto Rico differed significantly from records made in Brazil. Foraging and host-searching occurred over a greater daily period and were less severely affected by climatic conditions. Foraging adults, previously recorded only on Spermacoce verticillata L. and species of Hyptis, were also frequently found on Euphorbia heterophylla L. and Croton glandulosus L. Mate-searching is described and appears to be based on the attraction of males to a female-produced pheromone.