DATA ON THE NESTING-BEHAVIOR OF CERCERIS- INTERRUPTA-PENINSULARIS MERCET AND DESCRIPTION OF ITS MATURE LARVA (HYMENOPTERA, SPHECIDAE)

The nesting behavior and mature larva of Cerceris interrupta peninsula ris Mercet are described. The nests belong to the regressive type. On each day, the female brings in the nest prey (weevils) enough to compl ete a cell. The number of provisioning flights increases during the ce ntral hours of the day, and both the first and latest flight of each d ay are significantly longer than the rest. The mature larva is similar to those described in the genus, but the spinnerets are remarkably sh ort, the labial palpi surpassing them.