ISSN 0033 2615 
PSYCHE^ 
A JOURNAL OF ENTOMOLOGY 
founded in 1874 by the Cambridge Entomological Club 
Vol. 90 
CONTENTS 
Dedication: Philip J. Darlington, Jr. Frank M. Carpenter 333 
The biology of Myrnwxenus t^ordiaf'ini Ru/sky, a slave-making ant (Hyme- 
noptera. Formicidae). Alfred Buschinf^er, Ursala Winter, and 
Walt her Faber 335 
Temperature-Induced changes in the calls of the Green Lacewing, Chry.soperla 
plorahnnda (Ncuropicra-. Chr\sop\di\c). Charles S. Henry 343 
Social organization in l.eptothorax ants: within- and between- species pat- 
terns. Joan M. Her hers 361 
‘Protest’ sounds of a grasshopper: predator-deterrent signal? SyrH A. Blond- 
heini and Fllezer Frankenherf' 387 
Age poKethism: its occurrence in the ant. Pheidole hortensis. and some general 
considerations. Prassede Calahi. Janies F A. Traniello. and 
Michael H. Werner 395 
Dail\ rh\ thms in social actix ities (d the harxester ant. Poyonotm rniex hadius. 
Deborah M. Gordon 413 
Behax ior of the slaxe-making ant, Harpayoxenus aniericanns (Fmery). and its 
host species under “seminatural” laboratorx conditions ( Hx menoptera. 
Formicidae). Thomas M. AUowavixud 
Maria Guadalupe Del Rio Pesado 425 
1983 
Index to x olume 90 
449 
