Intermediate-level parts in insect societies: adaptive structures that ants build away from the nest C. AndersonD. W. McShea Pages: 291 - 301
Comparison of reproductive strategies and raiding behaviour in facultative and obligatory slave-making ants: the case of Formica sanguinea and Polyergus rufescens A. MoriD. A. GrassoF. Le Moli Pages: 302 - 314
Social biology and sex ratios in the gall-inducing thrips, Oncothrips waterhousei and Oncothrips habrus B. D. KranzT. W. ChapmanM. P. Schwarz Pages: 315 - 323
Consuming large prey on the spot: the case of the arboreal foraging ponerine ant Platythyrea modesta (Hymenoptera, Formicidae) C. Djiéto-LordonJ. OrivelA. Dejean Pages: 324 - 326
Continuous transfer of subterranean mealybugs (Hemiptera, Pseudococcidae) by Pseudolasius spp. (Hymenoptera, Formicidae) during colony fission? A.K.F. MalschE. KaufmannU. Maschwitz Pages: 333 - 341
Intra-colony, inter-colony and seasonal variations of cuticular hydrocarbon profiles in Formica japonica (Hymenoptera, Formicidae) Z. B. LiuA. G. BagnèresJ. Kojima Pages: 342 - 346
Colony structure and foraging behavior in the tropical formicine ant, Gigantiops destructor G. BeugnonP. ChagnéA. Dejean Pages: 347 - 351
Three new host species of the social wasp parasite, Polistes atrimandibularis (Hymenoptera, Vespidae) D. FanelliR. CervoS. Turillazzi Pages: 352 - 354
Nutritional factors affecting the egg sex ratio adjustment by a honeybee queen K. SasakiY. Obara Pages: 355 - 359
Thermographic recordings show that honeybees may receive nectar from foragers even during short trophallactic contacts W. M. FarinaA. J. Wainselboim Pages: 360 - 362
Wasps enter and leave their nest at regular intervals G. D. RuxtonJ. LeeM. H. Hansell Pages: 363 - 365
Changes in food source profitability affect Nasonov gland exposure in honeybee foragers Apis mellifera L. P. C. FernándezW. M. Farina Pages: 366 - 371
Underground passage system of Macrotermes carbonarius (Isoptera, Termitidae) in a dry evergreen forest of northeast Thailand T. InoueN. KirtibutrT. Abe Pages: 372 - 377
Social regulation of testicular development in primary and secondary males of the dampwood termite Zootermopsis angusticollis Hagen C. S. BrentJ. F. A. Traniello Pages: 384 - 391
Benefits of cooperative breeding through increased colony survival in an allodapine bee K. HogendoornJ. Zammit Pages: 392 - 397
The effect of food reserves on the production of sexual offspring in the stingless bee Melipona beecheii (Apidae, Meliponini) H. Moo-ValleJ. J. G. Quezada-EuánT. Wenseleers Pages: 398 - 403