1981] 
Levings & Traniello — Territoriality in Ants 
317 
Sanders, C. J. 
1970. The distribution of carpenter ant colonies in the spruce fir forests of 
northwestern Ontario. Ecology 51 : 865-873. 
Scherba, G. 
1958. Reproduction, nest orientation and population structure of an aggrega- 
tion of mound nests of Formica ulkei, Emery (Formicidae). Insectes 
Sociaux 5: 201-213. 
Scherba, G. 
1964. Species replacement as a factor affecting distribution of Formica 
opaciventris Emery (Hymenoptera: Formicidae). Journal of the New 
York Entomological Society 72: 231-237. 
Schneirla, T. C. 
1971. Army ants: a study in social organization. W. H. Freeman and Co., San 
Francisco. 
Schoener, T. 
1971. Theory of feeding strategies. Annual Review of Ecology and Systematics 
2: 369-404. 
SlMBERLOFF, D. S. 
1979. Nearest neighbor assessments of spatial configurations of circles rather 
than points. Ecology 60 : 679-685. 
Skinner, G. H. 
1980. Territory, trail structure and activity patterns in the wood ant, Formica 
rufa (Hymenoptera: Formicidae) in limestone woodland in northwest 
England. Journal of Animal Ecology 49 : 381-394. 
STEBAEV, I., AND J. I. REZNIKOVA. 
1972. Two interaction types of ants living in steppe ecosystem in South 
Siberia, USSR. Ekologia Polska 20: 103-109. 
Steyn, J. J. 
1954. The pugnacious ant ( Anoplolepis custodiens Smith) and its relation to 
the control of citrus scales at Letaba. Memoirs of the Entomological 
Society of South Africa 3: 1-96. 
Sudd, J. H., T. M. Douglas, T. Gaynard, D. M. Murray, and J. M. Stockdale. 
1977. The distribution of wood ants ( Formica lugubris Zetterstedt) in a 
northern English forest. Ecological Entomology 2: 301-313. 
Swain, R. 
1977. The natural history of Monads, a genus of Neotropical ants. Unpub- 
lished Ph.D. dissertation, Harvard University. 
Talbot, M. 
1943. Population studies of the ant Prenolepis imparis. Ecology 24 : 31-44. 
Talbot, M. 
1951. Population and hibernating conditions of the ant Aphaenogaster (At- 
tomyrma) rudis Emery (Hymenoptera: Formicidae). Annals of the 
Entomological Society of America 44 : 302-307. 
Talbot, M. 
1954. Populations of the ant Aphaenogaster (Attomyrma) treatae Forel on 
abandoned fields on the Edwin S. George Reserve. Contribution from 
the Laboratory of Vertebrate Biology of the University of Michigan, no. 
69, pp. 1-9. 
