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A Note on Megachile (Sayapis) pugnata pugnata Say in Trap-nests in Wisconsin (Hymenoptera: Megachilidae)

Published online by Cambridge University Press:  31 May 2012

J. T. Medler
J. T. Medler
Affiliation:
University of Wisconsin, Madison
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Abstract

Records are presented on twenty nests of Megachile pugnata Say obtained from sumac stick trap-nests. These nests were distinctive as, unlike most Megachile nests, the cells were not constructed from pieces of cut leaf. Instead, the cells were made with basal and apical partitions consisting of leaf discs, chewed leaf materials and soil. Each finished nest contained an empty vestibule and had an orifice plug. The sequences of males and females, and the natural enemies of this species were determined by rearings. Females normally preceded males in the sequence of cells. The species was parasitized by Coelioxys alternata Say and Leucospis affinis Say. The mean number of cells in the nests was 3.5. There is one generation a year in Wisconsin.

Type
Articles
Information
The Canadian Entomologist , Volume 96 , Issue 6 , June 1964 , pp. 918 - 921
Copyright
Copyright © Entomological Society of Canada 1964

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References

Medler, J. T. 1958. Parasitism of bees in trap-nests by Leucospis affinis Say. Ent. News 69: 21–24.Google Scholar
Medler, J. T., and Koerber, T. W.. 1958. Biology of Megachile relativa Cresson in Trapnests in Wisconsin. Ann. ent. Soc. Amer. 51: 337–344.Google Scholar
Mitchell, T. B. 1962. Bees of the Eastern United States, Vol. 2. Tech. Bull. N.C. agric. Exp. Sta. 152, 179 pp.Google Scholar