Author： KIM JONG-YOON
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.85, Iss.1, 1992-01, pp. : 85-90
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Abstract
Nests of two wild leaf-cutter bees, Megachile (Litomegachile) gentilis Cresson and M. (Eutricharaea) timberlakei Cockerell, were obtained from trap-nesting. The nests were composed of linear series of brood cells. The brood cells contained leaf disks which tightly covered the cocoons within. Cocoon size, weight, and adult weight decreased toward the nest entrance as commonly occurs in tube-nesting solitary bees. In addition, the size of the leaf disks decreased toward the nest entrance and were positively related to that of the cocoons. Sizes of the cocoons and leaf disks were influenced by sex allocation, producing females in the inner and males in the outer brood cells within the nests. Cell morphology of the two species was compared.
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