Abstract / Introduction / Summary:
A rare scolid wasp, Campsomeriella annuloides, is recorded from mainland Kyushu (Saga Prefecture), Japan for the first time. The single male specimen collected is in color pattern more melanic, i. e., yellowish markings on the head and mesosomal dorsum being reduced, than in the specimens from the type locality (Southern Ryukyu Islands). This feature agrees with the male specimens found on Kochi Prefecture, Shikoku, suggesting that it might characterize the mainland populations. Although the female sex of this species has not yet been discovered, there is possibility that it corresponds to the female-based species Megacampsomeris stoetzneri (Betrem, 1928), for which the male sex has been unknown. The sandy beach, which is the newly discovered habitat of C. annuloides, is planned to become a park, and rapid development is underway. This coast is also home to other valuable coastal hymenopterans besides C. annuloides, thus careful consideration is necessary during construction work to ensure that these habitats are not destroyed.
