58 
Psyche 
[Vol. 95 
forest tent caterpillars (Lepidoptera: Lasiocampidae). Ann. Entomol. 
Soc. Am. 79 : 999-1007. 
Greenblatt, J. A. and J. Witter. 
1976. Behavioral studies on Malacosoma disstria (Lepidoptera: Lasiocampi- 
dae). Can. Entomol. 108 : 1225-1228. 
Jones, R. E. 
1977. Search behaviour: a study of three caterpillar species. Behaviour 60 : 
237-259. 
Laux, W. 
1962. Individuelle Unterschiede in Verhalten und Leistung des Ringelspinners, 
Malacosoma neustria (L.) Z. Angewandte Zoologie 49 : 465-525. 
Ma, W-C. 
1972. Dynamics of feeding responses in Pieris brassicae Lin. as a function of 
chemosensory input; a behavioral, ultrastructural and electrophysio- 
logical study. Med. Landbouwhogeschool Wageningen 72-11: 1-162. 
Myers, J. 
1978. A search for behavioral variation in first and last laid eggs of western 
tent caterpillars and an attempt to prevent a population decline. Can. J. 
Zool. 56 : 2359-2363. 
Papaj, D. R. and M. D. Rausher. 
1983. Individual variation in host location by phytophagous insects. In Ahmad, 
S. (ed) Herbivorous insects: host-seeking behavior and mechanisms. 
Academic Press (New York). 77-124. 
Reynolds, S. E., M. R. Yeomans, W. A. Timmins. 
1986. The feeding behaviour of caterpillars ( Manduca sexto) on tobacco and 
artificial diet. Physiol. Entomol. 11 : 39-51. 
Weiner, J. and O. T. Solbrig. 
1984. The meaning and measurement of size hierarchies in plant populations. 
Oecologia 61 : 334-336. 
Wellington, W. G. 
1957. Individual differences as a factor in population dynamics: the develop- 
ment of a problem. Can. J. Zool. 35: 293-323. 
Wilson, E. O. 
1971. The insect societies. Belknap Press (Cambridge, MA). 548. 
