ABSTRACT

The sleeping aggregative habits of the two blue nest renting wasps Chalybion bengalense (Dahlbom, 1845) and C. japonicum (Gribodo, 1882) are studied. The two species frequently aggregated on loosely hung strings or leaves for sleeping. The sleeping aggregation was loose and frequently involved both sexes, but males were more numerous than females, or only males in the case of the C. bengalense roost. The presence of C. japonicum in a mixed sleeping aggregation with C. bengalense is reported for the first time. Discussions on the sleeping aggregative habits of the two species are included.

中文翻译：

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Chalybion属（膜翅目：Sphecidae）两种蓝巢租用黄蜂的睡眠聚集习性

摘要

研究了两种蓝巢租用黄蜂Chalybion bengalense (Dahlbom, 1845) 和C. japonicum (Gribodo, 1882)的睡眠聚集习性。这两个物种经常聚集在松散的绳子或叶子上睡觉。睡眠聚集松散，经常涉及两性，但雄性比雌性多，或者在C. bengalense栖息地的情况下只有雄性。首次报道了C. japonicum在与C. begalense的混合睡眠聚集体中的存在。包括对两个物种的睡眠聚集习性的讨论。