A

 

Document Type

Article

Journal/Book Title/Conference

Psyche

Publication Date

9-1-1972

First Page

158

Last Page

164

Abstract

This paper reports the results of observations made during the summers of 1971 and 1972 on a small group of Bembix americana Fabricius nesting in a vacant lot in Seattle, Washington. This population was judged to be intermediate to comata Parker and spinolae Lepeletier at the subspecific level ( H. E. Evans, pers. comm.). Probably no North American digger wasp has been more thoroughly studied than B. americana (Evans 1957, 1966; Evans and Matthews 1968). However there has only been one report of this species making nests with more than a single cell (Parker 1925). Enns ( 1966) notes the uniqueness of this account and the difficulty of accurately digging out nests in dense colonies. Nevertheless in the course of my work I discovered that some of the wasps in Seattle were making multi-celled nests. The evidence for this is presented here as well as data on the nest building behavior of marked females over a period of time.

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