166 
Psyche 
[June-September 
between populations nesting in different habitats at the same season 
and between populations nesting at the same sites at different sea¬ 
sons demonstrates a rather larger amount of behavioral plasticity 
than might have otherwise been anticipated. 
Acknowledgements 
We would like to dedicate this paper to Professor Howard E. 
Evans on the occasion of his 60th birthday. This paper is a part of a 
comparative study of sand wasp behavior undertaken on St. Cath¬ 
erine’s Island with the support of the Edward John Noble Founda¬ 
tion in cooperation with the American Museum of Natural History. 
For prey and parasite identifications we are indebted to the follow¬ 
ing specialists: R. J. Gagne (Muscidae, Calliphoridae and Sarcopha- 
gidae); L. Knutson (Sciomyzidae and Empididae); W. N. Mathis 
(Ephydridae and Canacidae); C. W. Sabrosky (Milichiidae and 
Tachinidae); G. Steyskal (Anthomyiidae, Tethinidae and Otitidae); 
F. C. Thompson (Tabanidae, Syrphidae and Dolichopodidae); and 
W. W. Wirth (Therevidae). R. M. Bohart confirmed the identities of 
the Crabro. Voucher specimens are deposited in the University of 
Georgia P. W. Fattig Museum. 
1974. The behaviour of Philanthus crabroniformis (Hymenoptera: Sphecidae). 
J. Zool. (London) 173: 233-246. 
Bohart, R. M. 
1976. A review of the Nearctic species of Crabro (Hymenoptera: Sphecidae). 
Trans. Amer. Ent. Soc. 102: 229-287. 
Bohart, R. M. and A. S. Menke. 
1976. Sphecid Wasps of the World. University of California Press, Berkeley, 
695 pp. 
Evans, H. E. 
1960. Observations on the nesting behavior of three species of the genus Cra¬ 
bro (Hymenoptera: Sphecidae) J. N. Y. Ent. Soc. 68: 123-134. 
Evans, H. E., F. E. Kurczewski and J. Alcock. 
1979. Observations on the nesting behavior of seven species of Crabro (Hyme¬ 
noptera: Sphecidae). (in preparation) 
■ Kurczewski, F. E. and R. E. Acciavatti. 
1968. A review of the nesting behavior of the Nearctic species of Crabro , 
including observations on C. advenus and C. latipes (Hymenoptera: 
Sphecidae). J. N. Y. Ent. Soc. 77: 152-170. 
Miller, R. C. and F. E. Kurczewski. 
1976. Comparative nesting behaviors of Crabro rufibasis and Crabro arca- 
diensis (Hymenoptera: Sphecidae: Crabroninae). Florida Ent. 59: 267- 
285. 
