PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
Vol. 71 March, 1964 No. 1 
CONTENTS 
Chemical Releasers of Social Behavior. II. Source and Specificity of the 
Odor Trail Substances in Four Attine Genera. M. S. Blum, J. C. Moser 
and A. D. Cordero 1 
Remarks on Sceliotrachelus Brues and Allied Genera (Hymenoptera, 
Platygasteridae) . Lubomir Masner 8 
North American Widow Spiders of the Latrodectus curacaviensis Group 
(Araneae, Theridiidae) . J. D. McCrone and H. IV. Levi 12 
The Anatomical Source of Trail Substances in Formicine Ants. M. S. 
Blum and E. O. Wilson 28 
The American Spiders of the Genera Styposis and Pholcomma (Araneae, 
Theridiidae). II. W. Levi 
32 
