Aculeate wasps and bees were surveyed at eleven sandy beeches in northern part of Hyogo prefecture. Nesting aggregations of the sand wasp Bembix niponica were found on four beeches, Kehnohama and eastern edge of Takenohama, Toyooka City, and Mitahama and Hamayasuki, Kami Town. These are first reliable records at the coastal area of Japan Sea in Hyogo prefecture. The sites where Bembix niponica populations were found currently seem to be under considerably strong artificial disturbance, and need some conservation efforts such as enlightening to the local people and tourists to promote the understanding of their ecological values. Other six and four species of aculeate wasps and bees were recorded as coastal inhabitants in Kehnohama and Hamayasuki, respectively. Out of a total of 25 species obtained in both beeches, three were endangered species appeared in national and prefectural red data books. This fact may indicate that sandy beeches in this area are important habitats for sand wasps and bees.
