Forder, J. C.; Marsh, A. C. 1989. Social organization and reproduction in Ocymyrmex foreli (Formicidae: Myrmicinae). Insectes Sociaux 36:106-115.

Heinze, J.; Buschinger, A. 1989b. Queen polymorphism in Leptothorax spec.A: its genetic and ecological background (Hymenptera: Formicidae). Insectes Sociaux 36:139-155.

Satoh, T. 1989. Comparisons between two apparently distinct forms of Camponotus nawai Ito (Hymenoptera: Formicidae). Insectes Sociaux 36:277-292.

Boomsma, J. J.; Brouwer, A. H.; Van Loon, A. J. 1990. A new polygynous Lasius species (Hymenoptera: Formicidae) from central Europe. II. Allozymatic confirmation of species status and social structure. Insectes Sociaux 37:363-375.

Van Loon, A. J.; Boomsma, J. J.; Andrasfalvy, A. 1990. A new polygynous Lasius species (Hymenoptera: Formicidae) from central Europe. I. Description and general biology. Insectes Sociaux 37:348-362. PDF

Masuko, K. 1990a. Behavior and ecology of the enigmatic ant Leptanilla japonica Baroni Urbani (Hymenoptera: Formicidae: Leptanillinae). Insectes Sociaux 37:31-57. PDF

Dorow, W. H. O.; Maschwitz, U. 1990. The arachne-group of Polyrhachis (Formicidae: Formicinae): weaver ants cultivating Homoptera on bamboo. Insectes Sociaux 37:73-89. PDF

Jessen, K.; Klinkicht, M. 1990. Hybridization in the social parasitic ant genus Epimyrma (Hymenoptera, Formicidae). Insectes Sociaux 37:273-293.

Peeters, C. 1991b. Ergatoid queens and intercastes in ants: two distinct adult forms which look morphologically intermediate between workers and winged queens. Insectes Sociaux 38:1-15.

Buschinger, A.; Fischer, K. 1991. Hybridization of chromosome-polymorphic populations of the inquiline ant, Doronomyrmex kutteri (Hym., Formicidae). Insectes Sociaux 38:95-103.

Brandão, C. R. F.; Diniz, J. L. M.; Tomotake, E. M. 1991. Thaumatomyrmex strips millipedes for prey: a novel predatory behaviour in ants, and the first case of sympatry in the genus (Hymenoptera: Formicidae). Insectes Sociaux 38:335-344. PDF

Espadaler, X.; López-Soria, L. 1991. Rareness of certain Mediterranean ant species: fact or artifact? Insectes Sociaux 38:365-377.

Tsuji, K.; Furukawa, T.; Kinomura, K.; Takamine, H.; Yamauchi, K. 1991. The caste system of the dolichoderine ant Technomyrmex albipes (Hymenoptera: Formicidae): morphological description of queens, workers and reproductively active intercastes. Insectes Sociaux 38:413-422.

Maschwitz, U.; Fiala, B.; Moog, J.; Saw, L. G. 1991. Two new myrmecophytic associations from the Malay Peninsula: ants of the genus Cladomyrma (Formicidae, Camponotinae) as partners of Saraca thaipingensis (Caesalpiniaceae) and Crypteronia griffithii (Crypteroniaceae). Insectes Sociaux 38:27-35.

Harkness, Margaret L. R.; Harkness, R. D. 1991. An odd activity of an ant (Cataglyphis bicolor); «visiting». Insectes Sociaux 38(1):45-49. PDF

Mei, M. 1992b. A survey of the socially parasitic ant genera Epimyrma Emery, 1915 and Chalepoxenus Menozzi, 1922 in Italy (Hymenoptera, Formicidae, Myrmicinae). Insectes Sociaux 39:145-156. PDF

Heinze, J.; Hölldobler, B.; Cover, S. P. 1992. Queen polymorphism in the North American harvester ant, Ephebomyrmex imberbiculus. Insectes Sociaux 39:267-273.

Jaisson, P.; Fresneau, D.; Taylor, R. W.; Lenoir, A. 1992. Social organization in some primitive Australian ants. I. Nothomyrmecia macrops Clark. Insectes Sociaux 39:425-438. PDF

Pamilo, P.; Chautems, D.; Cherix, D. 1992. Genetic differentiation of disjunct populations of the ants Formica aquilonia and Formica lugubris in Europe. Insectes Sociaux 39:15-29.

Buschinger, A.; Heinze, J. 1993. Doronomyrmex pocahontas: not a workerless parasite but still an enigmatic taxon (Hymenoptera, Formicidae). Insectes Sociaux 40:423-432. PDF

Baroni Urbani, C. 1993. The diversity and evolution of recruitment behaviour in ants, with a discussion of the usefulness of parsimony criteria in the reconstruction of evolutionary histories. Insectes Sociaux 40:233-260.

Ito, F. 1993. Observation of group recruitment to prey in a primitive ponerine ant, Amblyopone sp. (reclinata group) (Hymenoptera: Formicidae). Insectes Sociaux 40:163-167.

Heinze, J.; Kühnholz, S.; Schilder, K.; Hölldobler, B. 1993. Behavior of ergatoid males in the ant, Cardiocondyla nuda. Insectes Sociaux 40:273-282.

Baur, A.; Buschinger, A.; Zimmermann, F. K. 1993. Molecular cloning and sequencing of 18S rDNA gene fragments from six different ant species. Insectes Sociaux 40:325-335.

Diniz, J. L. M.; Brandão, C. R. F. 1993. Biology and myriapod predation by the Neotropical myrmicine ant Stegomyrmex vizottoi (Hymenoptera: Formicidae). Insectes Sociaux 40:301-311. PDF

Steghaus-Kovac, S.; Maschwitz, U. 1993. Predation on earwigs: a novel diet specialization within the genus Leptogenys (Formicidae: Ponerinae). Insectes Sociaux 40:337-340.

Hölldobler, B.; Peeters, C.; Obermayer, M. 1994. Exocrine glands and the attractiveness of the ergatoid queen in the ponerine ant Megaponera foetens. Insectes Sociaux 41:63-72.

Majer, J. D.; Delabie, J. H. C. 1994. Comparison of the ant communities of annually inundated and terra firme forests at Trombetas in the Brazilian Amazon. Insectes Sociaux 41:343-359.

Elmes, G. W. 1994. A population of the social parasite Myrmica hirsuta Elmes (Hymenoptera, Formicidae) recorded from Jutland, Denmark, with a first description of the worker caste. Insectes Sociaux 41:437-442.

Lenoir, A.; Dejean, A. 1994. Semi-claustral colony foundation in the formicine ants of the genus Polyrhachis (Hymenoptera: Formicidae). Insectes Sociaux 41:225-234.