90 
Psyche 
[Vol. 94 
Barrows, E. M. 1979. Polistes wasps (Hymenoptera: Vespidae) show interfer- 
ence competition with other insects for Kermes scale insects (Homoptera: Ker- 
mesidae) secretions. Proc. Entomol. Soc. Wash. 81 : 570-575. 
Belt, T. 1874. The Naturalist in Nicaragua. John Murray, London. 403 pp. 
Bloc, A., P. Thievent, and H. Montagner. 1984. Etude preliminaire de la 
dynamique des populations d’un puceron producteur de miellat: Cinara pectina- 
tae Nordl. (Homoptera-Lachnidae) dans Le Doubs. relation avec la pluviome- 
trie. Apidologie 15 : 11-22. 
Bradley, G. A. and J. D. Hinks. 1968. Ants, aphids, and jack pine in Manitoba. 
Can. Entomol. 100 : 40-50. 
Bristow, C. M. 1984. Differential benefits from ant attendance to two species of 
Homoptera on New York ironweed. J. Anim. Ecol . 53: 715-726. 
Brown, R. L. 1976. Behavioral observations on Aethalion reticulatum (Hem., 
Aethalionidae) and associated ants. Ins. Soc. 23: 99-107. 
Burger, W. 1971. Flora Costaricencis. Fieldiana Botany 35: 1-227. 
Castro, P. R. C. 1975. Mutualism entre Trigona spinipes (Fabricius 1793) e 
Aethalion reticulatum (L. 1767) em Cajanus indicus Spreng. na presenca de 
Camponotus spp. Ciencia e Cultura 27: 537-539. 
Cockerell, T. D. A. 1920. Some tropical meliponid bees. Bull. Amer. Mus. Nat. 
Hist. 42 : 459-468. 
Cortopassi-Laurino, M. 1977. Notas sobre associacoes de Trigona ( Oxytri - 
gona) tataira (Aphidae, Meliponinae). Bolm. Zool. Univ. Sao Paulo 2: 183-187. 
Duncan, C. D. 1939. A contribution to the biology of North American vespine 
wasps. Stanford Univ. Pub. Biol. Sci. 8: 1-272. 
El-Ziady, S. 1960. Further effects of Lasius niger L. on Aphis fabae Scopoli. 
Proc. Roy. Entomol. Soc. London (A) 35: 30-38. 
Evans, H. E. 1968. Notes on some digger wasps that prey upon leafhoppers. Ann. 
Entomol. Soc. Amer. 61 : 1343-1344. 
Evans, H. E. and M. J. West Eberhard. 1970. The Wasps. Univ. of Michigan 
Press, Ann Arbor, 265 pp. 
Fritz, R. S. 1982. An ant-treehopper mutualism: effects of Formica subsericea 
on the survival of Vanduzea arquata. Ecol. Entomol. 7 : 267-276. 
Gerling, D. 1966. Biological studies on Encarsia formosa. Ann. Entomol. Soc. 
Amer. 59: 142-143. 
Hook, A. 1981. Nesting biology of Tanyoprymnus moneduloides and Ammato- 
mus icarioides. Ann. Entomol. Soc. Amer. 74 : 409-411. 
Ikan, R. and J. Ishay. 1966. Larval wasp secretions and honeydew of the aphids, 
Chaitophorus populi, feeding on Populus euphratica as sources of sugars in the 
diet of the oriental hornet, Vespa orientalis F. Israel J. Zool. 15 : 64-68. 
Jeanne, R. L. 1972. Social biology of the neotropical wasp Mischocyttarus drew- 
seni. Bull. Mus. Comp. Zool. 144 : 63-150. 
Jiron P., L. F. and S. Salas D. 1975. Simbiosis entre “cochinillas de cola” 
(Coccoidea: Margarodidae) y otros insectos. I. Los componentes del sistema 
simbiotico en la tierra alta de Costa Rica. Brenesia 5: 67-71. 
Kloft, W., A. Maurizio, and W. Kaeser. 1965. Das Waldhonigbuch. Ehren- 
wirth Verlag Miinchen, Mtinchen. 
Kunkel, W. and W. Kloft. 1977. Fortschritte auf dem Gebiet der Honigtau- 
Forschung. Apidologie 8: 369-391. 
