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PSYCHE 
A JOURNAL OF ENTOMOLOGY 
founded in 1874 by the Cambridge Entomological Club 
Vol. 83 June, 1976 No. 2 
CONTENTS 
The Social Organization of Male Populations of Centris pallida (Hymen- 
optera, Anthophoridae). John Alcock 121 
Respiratory Significance of the Thoracic and Abdominal Morphology of 
Three Corixidae, Diaprepocoris, Micronecta, and Hesperocorixa (Hemip- 
tera; Heteroptera: Hydrocorisae). Margaret C. Parsons 133 
The Adaptive Value of Polymorphism in an Alpine Ant, Formica neorufi- 
barbis gelida Wheeler. Ruth A. Bernstein . 181 
A New Argentine Genus of Theriini (Hymenoptera, Ichneumonidae). Charles 
C. Porter 186 
A New Genus and Species of Coniopterygidae (Neuroptera) from New 
Mexico. Victor Johnson 193 
Lycosid Spiders on Artificial Foliage: Stratum Choice, Orientation Prefer- 
ences, and Prey-Wrapping. Eric A. Greenquist and Jerome S. Rovner 197 
A Technique for Observing the Behaviour of Small Animals under Field 
Conditions. Michael H. Robinson and Nicholas D. Smythe .............. 211 
Ctenobethylus (Bethylidae) A New Synonym of Iridomyrmex (Formicidae, 
Hymenoptera). William L. Brown, Jr 214 
A New Species of Platythrea (Hymenoptera, Formicidae) from Costa Rica. 
Charles Kug/er 217 
