Plateaux, L. 1977. L'isolement reproductif de quelques fourmis du genre Leptothorax. Pp. 130-131 in: Velthuis, H. H. W.; Wiebes, J. T. (eds.) 1977. Proceedings of the Eighth International Congress of the IUSSI, Wageningen, The Netherlands, September 5-10, 1977. Wageningen: Centre for Agricultural Publishing and Documentation, 325 pp.

Plateaux, L. 1981. The pallens morph of the ant Leptothorax nylanderi: description, formal genetics, and study of populations. Pp. 63-74 in: Howse, P. E.; Clement, J.-L. (eds.) 1981. Biosystematics of social insects. Systematics Association Special Volume No. 19. London: Academic Press, 346 pp.

Plateaux, L. 1987. Reproductive isolation in ants of the genus Leptothorax, subgenus Myrafant. Pp. 33-34 in: Eder, J.; Rembold, H. (eds.) 1987. Chemistry and biology of social insects. München: Verlag J. Peperny, xxxv + 757 pp.

Piton, L. 1935. [New species Formica cantalica attributed to Piton]. Pp. 68-69 in: Piton, L.; Théobald, N. 1935. La faune entomologique des gisements Mio-Pliocènes du Massif Central. Revue des Sciences Naturelles d'Auvergne (n.s.)1:65-104. PDF

Piton, L. 1935. [New species Camponotus obesus attributed to Piton]. Pp. 68 in: Piton, L.; Théobald, N. 1935. La faune entomologique des gisements Mio-Pliocènes du Massif Central. Revue des Sciences Naturelles d'Auvergne (n.s.)1:65-104. PDF

Piton, L. 1935. [New species Formica auxillacensis attributed to Piton]. P. 91 in: Piton, L.; Théobald, N. 1935. La faune entomologique des gisements Mio-Pliocènes du Massif Central. Revue des Sciences Naturelles d'Auvergne (n.s.)1:65-104. PDF

Pisarski, B.; Czechowski, W. 1987. Structure and origin of ant communities of Warsaw. P. 605 in: Eder, J.; Rembold, H. (eds.) 1987. Chemistry and biology of social insects. München: Verlag J. Peperny, xxxv + 757 pp.

Pisarski, B. 1981b. Intraspecific variations in ants of the genus Formica L. Pp. 17-25 in: Howse, P. E.; Clement, J.-L. (eds.) 1981. Biosystematics of social insects. Systematics Association Special Volume No. 19. London: Academic Press, 346 pp.

Pignalberi, C. T. 1961. Contribución al conocimiento de los formícidos de la provincia de Santa Fé. Pp. 165-173 in: Comisión Investigación Científica; Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina) 1961. Actas y trabajos del primer Congreso Sudamericano de Zoología (La Plata, 12-24 octubre 1959). Tomo III. Buenos Aires: Librart, 276 pp.

Phosrithong, N.; Jaitrong, W. 2024. [Untitled. Plagiolepis chomphuphuangi sp. nov. and Plagiolepis silpaarchai sp. nov. attributed to N. Phosrithong and W. Jaitrong.]. Pp. 3-11 in: Phosrithong, N.; Rattanachan, K.; Satakoune, L.; Jaitrong, W. 2024. Two new species of the ant genus Plagiolepis Mayr, 1861 (Hymenoptera: Formicidae: Formicinae) from Indochina. Far Eastern Entomologist 492:1-14. PDF

Petal, J.; Pisarski, B. 1993. Formicidae. Pp. 253-262 in: Górny, M.; Grüm, L. (eds.) 1993. Methods in soil zoology. Amsterdam: Elsevier, xii + 459 pp.

Perrichot, V.; Engel, M. S. 2022. [Untitled. Technomyrmex svojtkai sp. nov. described by V. Perrichot and M. S. Engel]. Pp. 780-782 in: Perrichot, V.; Boudinot, B. E.; Engel, M. S.; Xu, C.; Bojarski, B.; Szwedo, J. 2022. Ants (Hymenoptera: Formicidae) from Miocene Ethiopian amber: filling gaps in the geological record of African terrestrial biota. Zoological Journal of the Linnean Society 196:775-791. [online early] PDF

Peeters, C.; Ito, F.; Gobin, B.; Fannes, W.; Billen, J. 1998. Queen-worker divergence in the spermathecae of ponerine and myrmeciine ants. [Abstract.]. P. 369 in: Schwarz, M. P.; Hogendoorn, K. (eds.) 1998. Social insects at the turn of the millennium. Proceedings of the XIII International Congress of IUSSI. Adelaide, Australia. 29 December 1998 - 3 January 1999. Adelaide: XIII Congress of IUSSI, 535 pp.

Peeters, C. 1984. Could the queenless ant Ophthalmopone berthoudi re-evolve a reproductive caste from its fertile workers? [Abstract.]. P. 515 in: XVII International Congress of Entomology 1984. Abstract Volume. Hamburg, Federal Republic of Germany, August 20-26, 1984. Hamburg: XVII International Congress of Entomology, 960 pp.

Peeters, C. 1987. The diversity of reproductive systems in ponerine ants. Pp. 253-254 in: Eder, J.; Rembold, H. (eds.) 1987. Chemistry and biology of social insects. München: Verlag J. Peperny, xxxv + 757 pp.

Peeters, C. 1993. Monogyny and polygyny in ponerine ants with or without queens. Pp. 234-261 in: Keller, L. (ed.) 1993. Queen number and sociality in insects. Oxford: Oxford University Press, 451 pp. PDF

Peeters, C. 1997. Morphologically "primitive" ants: comparative review of social characters, and the importance of queen-worker dimorphism. Pp. 372-391 in: Choe, J. C.; Crespi, B. J. (eds.) 1997. The evolution of social behavior in insects and arachnids. Cambridge: Cambridge University Press, xiii + 541 pp.

Peeters, C. 1998. Caste divergence and reproduction in ponerine ants. [Abstract.]. P. 368 in: Schwarz, M. P.; Hogendoorn, K. (eds.) 1998. Social insects at the turn of the millennium. Proceedings of the XIII International Congress of IUSSI. Adelaide, Australia. 29 December 1998 - 3 January 1999. Adelaide: XIII Congress of IUSSI, 535 pp.

Pedraza, L.; Fernández, F. 2019. Género Crematogaster. Capítulo 28. Pp. 889-897 in: Fernández, F.; Guerrero, R. J.; Delsinne, T. (eds.) 2019d. Hormigas de Colombia. Bogotá: Universidad Nacional de Colombia, 1198 pp. PDF

Pearson, B. 1981. The electrophoretic determination of Myrmica rubra microgynes as a social parasite: possible significance in the evolution of ant social parasites. Pp. 75-84 in: Howse, P. E.; Clement, J.-L. (eds.) 1981. Biosystematics of social insects. Systematics Association Special Volume No. 19. London: Academic Press, 346 pp.

Paul, J.; Roces, F. 2019. Comparative functional morphology of ant mouthparts and significance for liquid food intake. Pp. 335-357 in: Krenn, H. W. (ed.) 2019. Insect mouthparts: form, function, development and performance. Zoological Monographs 5:683 pp. PDF

Passera, L. 1985. Soldier determination in ants of the genus Pheidole. Pp. 331-346 in: Watson, J. A. L.; Okot-Kotber, B. M.; Noirot, C. (eds.) 1985. Caste differentiation in social insects. Oxford: Pergamon Press, xiv + 405 pp.

Parker, J. D.; Dowling, T. E.; Johnson, R. A.; Rissing, S. W. 1998. Evolutionary origins of the ant social parasites of the North American seed harvester ants Pogonomyrmex. [Abstract.]. P. 361 in: Schwarz, M. P.; Hogendoorn, K. (eds.) 1998. Social insects at the turn of the millennium. Proceedings of the XIII International Congress of IUSSI. Adelaide, Australia. 29 December 1998 - 3 January 1999. Adelaide: XIII Congress of IUSSI, 535 pp.

Paraschivescu, D. 1969. Geographische Verbreitung der Formiciden in Rumänien (Hymenoptera). Pp. 221-232 in: Ernst, E. et al. (eds.) 1969. International Union for the Study of Social Insects. VI Congress. Bern 15-20 September 1969. Proceedings. Bern: Organizing Committee of the VI Congress IUSSI, 309 pp.

Paraschivescu, D. 1975b. Hymenoptera - Formicidae. Pp. 187-189 in: Ionescu, M. (ed.) 1975. Fauna. Academia Republicii Socialiste România. Grupul de cercetari complexe "Portile de Fier". Seria monografica. Bucharest: Editura Academiei Republicii Socialiste România, 316 pp.

Pamilo, P.; Vepsäläinen, K. 1977. Heretical notes on the taxonomy of Formica s. str. (Hym.). Pp. 128-129 in: Velthuis, H. H. W.; Wiebes, J. T. (eds.) 1977. Proceedings of the Eighth International Congress of the IUSSI, Wageningen, The Netherlands, September 5-10, 1977. Wageningen: Centre for Agricultural Publishing and Documentation, 325 pp.

Pamilo, P. 1987. Population genetics of the Formica rufa group. Pp. 68-70 in: Eder, J.; Rembold, H. (eds.) 1987. Chemistry and biology of social insects. München: Verlag J. Peperny, xxxv + 757 pp.

Palacio, E. E.; Fernández, F. 2003. Claves para las subfamilias y géneros. Pp. 233-260 in: Fernández, F. (ed.) 2003. Introducción a las hormigas de la región Neotropical. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, xxvi + 424 pp.

Palacio, E. E. 2003. Subfamilia Ecitoninae. Pp. 281-285 in: Fernández, F. (ed.) 2003. Introducción a las hormigas de la región Neotropical. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, xxvi + 424 pp.

Palacio, E. E. 2019. Subfamilia Dorylinae. Capítulo 19. Pp. 571-630 in: Fernández, F.; Guerrero, R. J.; Delsinne, T. (eds.) 2019d. Hormigas de Colombia. Bogotá: Universidad Nacional de Colombia, 1198 pp. PDF