HOMING AFTER DISPLACEMENT IN OPEN OR CLOSED CONTAINERS BY THE DIGGER WASP ARGOGORYTES-CARBONARIUS (HYMENOPTERA, SPHECIDAE)

Initial orientation and homing time were recorded in Argogorytes carbo narius after displacement in ''open'' and ''closed'' containers during two periods: ''first'' release dates and ''later'' release dates. At the later releases 'closed' wasps homed much better than at first rele ases and better than ''open'' wasps. At the first releases, on the oth er hand, the ''open'' wasps homed (slightly) better than the 'closed' wasps. An interpretation relates the better homing of 'closed' wasps a t the later trials to route learning at the first trials and discusses the differences and peculiarities of homing from familiar terrain and of home orientation by path integration.