Peeters, C.; Billen, J. P. J. 1991. A novel exocrine gland inside the thoracic appendages ('gemmae') of the queenless ant Diacamma australe. Experientia (Basel) 47:229-231.
Peeters, C.; Billen, J. P. J.; Hölldobler, B. 1992. Alternative dominance mechanisms regulating monogyny in the queenless ant genus Diacamma. Naturwissenschaften 79:572-573.
Peeters, C.; Crewe, R. M. 1985. Worker reproduction in the ponerine ant Ophthalmopone berthoudi: an alternative form of eusocial organization. Behavioral Ecology and Sociobiology 18:29-37. PDF
Peeters, C.; Crewe, R. M. 1986. Queenright and queenless breeding systems within the genus Pachycondyla (Hymenoptera: Formicidae). Journal of the Entomological Society of Southern Africa 49:251-255.
Peeters, C.; Crewe, R. M. 1987. Foraging and recruitment in ponerine ants: solitary hunting in the queenless Ophthalmopone berthoudi (Hymenoptera: Formicidae). Psyche (Cambridge) 94:201-214. PDF
Peeters, C.; Crozier, R. H. 1989 ("1988"). Caste and reproduction in ants: not all mated egg-layers are "queens". Psyche (Cambridge) 95:283-288.
Peeters, C.; Higashi, S. 1989. Reproductive dominance controlled by mutilation in the queenless ant Diacamma australe. Naturwissenschaften 76:177-180.
Peeters, C.; Hölldobler, B. 1992. Notes on the morphology of the sticky "doorknobs" of larvae in an Australian Hypoponera sp. (Formicidae; Ponerinae). Psyche (Cambridge) 99:23-30.
Peeters, C.; Hölldobler, B. 1995. Reproductive cooperation between queens and their mated workers: the complex life history of an ant with a valuable nest. Proceedings of the National Academy of Sciences of the United States of America 92:10977-10979.

Notes: Reproductive biology of Harpegnathos saltator.

Peeters, C.; Ito, F. 2001. Colony dispersal and the evolution of queen morphology in social Hymenoptera. Annual Review of Entomology 46:601-630.
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.; Molet, M.; Lin, C.-C.; Billen, J. 2017. Evolution of cheaper workers in ants: a comparative study of exoskeleton thickness. Biological Journal of the Linnean Society 121 (3):556-563. 10.1093/biolinnean/blx011 PDF
Peeters, C.; Wiwatwitaya, D. 2014. Philidris ants living inside Dischidia epiphytes from Thailand. Asian Myrmecology 6:49-61. PDF
Penev, S.; Ronchetti, G. 1965. Ricerche sulla distribuzione delle formiche del gruppo Formica rufa nella Bulgaria nord-orientale. Collana Verde 16:305-311.
Peng, J.; Liu, Y. (eds.) 1992. Iconography of forest insects in Hunan, China. Hunan: Hunan Scientific and Technical Publishing House, 1473 pp.
Penick, C.A.; Ebie, J.; Moore, D. 2014. A non-destructive method for identifying the sex of ant larvae. Insectes Sociaux 61:51-55. 10.1007/s00010-013-0323-5 PDF

Notes: Larva genital imaginal discs

Penzig, O. 1895 ("1894"). Note di biologie vegetale. I. Sopra una nuova pianta formicaria d'Africa (Stereospermum dentatum Rich.). Malpighia 8:466-471. PDF
Peregrine, D. J.; Mudd, A.; Cherrett, J. M. 1974 ("1973"). Anatomy and preliminary chemical analysis of the post-pharyngeal glands of the leaf-cutting ant, Acromyrmex octospinosus (Reich) (Hym., Formicidae). Insectes Sociaux 20:355-363.
Perejón Rincon, A. et al. (eds.) 1996. Real Sociedad Española de Historia Natural. Tomo extraordinario publicado con motivo del 125 aniversario de su fundación. Madrid: Real Sociedad Española de Historia Natural, 572 pp.
Pérez-Delgado, A.; Lugo, D.; Santos-Perdomo, I.; Jiménez-García, E.; Suárez, D. 2023. Rediscovery of the Canary Islands endemic Aphaenogaster hesperia Santschi, 1911 (Hymenoptera, Formicidae, Myrmicinae). Zootaxa 5383 (1):67-74. 10.11646/ZOOTAXA.5383.1.5 PDF
Pérez-Gonzáles, S.; Gómez-Durán, J. M.; Martínez-Ibáñez, M. D. 2020. Highlighting the elusive: new findings and a redescription of the rare ant Leptanilla plutonia López, Martínez Et Barandica, 1994, presenting morphological novelties for the genus. Annales Zoologici (Warsaw) 70:289-304. 10.3161/00034541ANZ2020.70.2.009 PDF
Pérez-Pedraza, L. F.; Fernández, F. 2019. Género Strumigenys. Capítulo 32. Pp. 1069-1088 in: Fernández, F.; Guerrero, R. J.; Delsinne, T. (eds.) 2019d. Hormigas de Colombia. Bogotá: Universidad Nacional de Colombia, 1198 pp. PDF
Pérez, C. 1902. Contribution a l'étude des métamorphoses. Bulletin Scientifique de la France et de la Belgique 37:195-427.

Notes: Formica rufa development

Perfecto, I.; Snelling, R. R. 1995. Biodiversity and the transformation of a tropical agroecosystem: ants in coffee plantations. Ecological Applications 5:1084-1097.
Perfecto, I.; Vandermeer, J. 1994. Understanding biodiversity loss in agroecosystems: reduction of ant diversity resulting from transformation of the coffee ecosystem in Costa Rica. Entomology (Trends in Agricultural Science) 2:7-13.
Perfecto, I.; Vandermeer, J. 1996. Microclimate changes and the indirect loss of ant diversity in a tropical agroecosystem. Oecologia (Berlin) 108:577-582.
Perfilieva, K. S. 2002. Wing venation in army ants (Hymenoptera, Formicidae, Myrmeciinae) and its importance for phylogeny. [In Russian.]. Zoologicheskii Zhurnal 81(10):1239-1250. PDF
Perfilieva, K. S. 2010. Trends in evolution of ant wing venation (Hymenoptera, Formicidae). Entomological Review 90:965-977. PDF
Perfilieva, K. S. 2011. New data on the wing morphology of the Cretaceous Sphecomyrminae ants (Hymenoptera: Formicidae). Paleontological Journal 45 (3):275-283. 10.1134/S0031030111030117 PDF
Perfilieva, K. S. 2021. Distribution and differentiation of fossil Oecophylla (Hymenoptera: Formicidae) species by wings imprints. Paleontological Journal 55:76-89. 10.1134/S003103012101010X PDF