Distribution and bionomics of a transpalaearctic eusocial halictine bee, Lasioglossum (Evylaeus) calceatum, in Northern Japan, with reference to its solitary life cycle at high altitude
Sakagami, S., F., Munakata, & M (1972). Distribution and bionomics of a transpalaearctic eusocial halictine bee, Lasioglossum (Evylaeus) calceatum, in Northern Japan, with reference to its solitary life cycle at high altitude. Journal of the Faculty of Science Hokkaido University, Series VI Zoology, 18(3), 411-439.