Nesting behaviour of three species ofTachysphexfrom Spain, with a description of the mature larva ofTachysphex tarsinus(Hymenoptera Sphecidae)

Data on the nesting behaviour of Tachysphex albocinctus (Lucas), T. consocius Kohl, and T. tarsinus (Lepeletier) are presented. T. alhocinctus uses immature mantids as prey, and their males exhibit territorial behaviour; T. consocius and T. tarsinus prey on nymphal acridids. The mature larva of T. tarsinus is described.