Petal, J. 1968 ("1967"). Materialy do znajomosci mrówek (Formicidae, Hymenoptera) Lubelszczyzny. VII. Zespoly mrówek srodowisk torfowiskowych, lesnych i wydmowych okolic Libiszowa (pow. Parczew). Annales Universitatis Mariae Curie-Sklodowska. Sectio C. Biologia 22:117-127.

Petal, J. 1993 ("1991"). Diversity of ant communities in peatbogs of various origin and period under management. Polish Ecological Studies 17:249-265.

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.

Peters, J. M. 1997. Microsatellite loci for Pseudomyrmex pallidus (Hymenoptera: Formicidae). Molecular Ecology 6:887-888.

Peters, R. S.; Krogmann, L.; Mayer, C.; Donath, A.; Gunkel, S.; Meusemann, K.; Kozlov, A.; Podsiadlowski, L.; Petersen, M.; Lanfear, R.; Diez, P. A.; Heraty, J.; Kjer, K. M.; Klopfstein, S.; Meier, R.; Polidori, C.; Schmitt, T.; Liu, S.; Zhou, X.; Wappler, T.; Rust, J.; Misof, B.; Niehuis, O. 2017. Evolutionary history of the Hymenoptera. Current Biology 27:1013-1018. 10.1016/j.cub.2017.01.027 PDF

Peters, R. S.; Meyer, B.; Krogmann, L.; Borner, J.; Meusemann, K.; Schütte, K.; Niehuis, O.; Misof, B. 2011. The taming of an impossible child: a standardized all-in approach to the phylogeny of Hymenoptera using public database sequences. BMC Biology 9:55. 10.1186/1741-7007-9-55 PDF

Peters, W. C. H. 1862. Naturwissenschaftliche Reise nach Mossambique auf Befehl seiner Majestät des Königs Friedrich Wilhelm IV in den Jahren 1842 bis 1848 ausgeführt. Berlin: G. Reimer, 21 + 566 pp. PDF

Petersen-Braun, M.; Buschinger, A. 1975. Entstehung und Funktion eines thorakalen Kropfes bei Formiciden-Königinnen. Insectes Sociaux 22:51-66.

Petersen, B. 1968. Some novelties in presumed males of Leptanillinae (Hym., Formicidae). Entomologiske Meddelelser 36:577-598. PDF

Petit, R. E.; Callomon, P. 2009. The distressing case of Polyhomoa itoi Azuma, 1949 and Kyidris mutica Brown, 1949. Conchologia Ingrata 2:1-4. PDF

Petralia, R. S.; Haut, C. F. 1986. Morphology of the labial gland system of the mature larva of the black carpenter ant, Camponotus pennsylvanicus (DeGeer). Proceedings of the Iowa Academy of Science 93:16-20.

Petralia, R. S.; Vinson, S. B. 1979. Developmental morphology of larvae and eggs of the imported fire ant, Solenopsis invicta. Annals of the Entomological Society of America 72:472-484. PDF

Petralia, R. S.; Vinson, S. B. 1980 ("1979"). Comparative anatomy of the ventral region of ant larvae, and its relation to feeding behavior. Psyche (Cambridge) 86:375-394. PDF

Petralia, R. S.; Vinson, S. B. 1980. Internal anatomy of the fourth instar larva of the imported fire ant, Solenopsis invicta Buren (Hymenoptera : Formicidae). International Journal of Insect Morphology and Embryology 9:89-106.

Petrenko, E. S. (ed.) 1979. Fauna of the forests of the Lake Baikal basin. [In Russian.]. Novosibirsk: Nauka, 157 pp.

Petrov, I. 2006. The ants of Serbia and Montenegro. [In Serbian.]. Posebna Izdanja. Srpska Akademija Nauka i Umetnosti 656:1-136. PDF

Petrov, I. Z. 1986a. Distribution of species of the genus Cataglyphis Foerster, 1850 (Formicidae, Hymenoptera) in Yugoslavia. Arhiv Bioloskih Nauka 38:11-12. PDF

Petrov, I. Z. 1986b. Prilog poznavanju faune mrava (Formicidae, Hymenoptera) nekih hrastovih zajednica na Jastrepcu. Glasnik Prirodnjackog Muzeja u Beogradu. Serija B. Bioloske Nauke 41:109-114. PDF

Petrov, I. Z. 1992. Myrmecofauna (Formicidae, Hymenoptera) of Serbia - up to now investigations. Glasnik Prirodnjackog Muzeja u Beogradu. Serija B. Bioloske Nauke 47:247-259.

Notes: Not seen. Cited in Zoological Record for 1994/1995.

Petrov, I. Z. 1994. Contribution to the myrmecofauna (Formicidae, Hymenoptera) of Deliblatska Peščara (Deliblato sandy area) (Serbia). Bios (Macedonia, Greece) 2:251-256. PDF

Petrov, I. Z. 1996. Ant species (Hymenoptera: Formicidae) collected in the Prokletije Range and the surroundings of Peć, Metohija, Serbia. Acta Entomologica Serbica 1:81-85.

Petrov, I. Z.; Collingwood, C. A. 1992. Survey of the myrmecofauna (Formicidae, Hymenoptera) of Yugoslavia. Archives of Biological Sciences (Belgrade) 44:79-91. PDF

Petrov, I. Z.; Collingwood, C. A. 1993. Formica balcanina sp. n., a new species related to the Formica cinerea-group (Hymenoptera: Formicidae). European Journal of Entomology 90:349-354. PDF

Petrov, I. Z.; Legakis, A. 1996. Contribution to the myrmecofauna (Formicidae, Hymenoptera) of Greece. Arch. biol. Sci. (Belgrade) 48 (3-4):31P-32P. PDF

Petrov, I. Z.; Mesaros, G. 1989 ("1988"). Prilog poznavanju faune mrava (Formicidae, Hymenoptera) Stare Planine. Acta Biologica Iugoslavica. Serija G. Biosistematika 14(1):43-50. PDF

Notes: Dated "1988" but last paper in this issue was accepted for publication 29 March 1989.

Petrulevicius, J. F. 1999. Insectos del Cenozoico de la Argentina. Revista de la Sociedad Entomológica Argentina 58(1/2):95-103.

Pettit, M. J.; Andersen, A. N. 2021. A new species of Epopostruma (Hymenoptera: Formicidae) from monsoonal Australia. Zootaxa 5048 (1):141-144. 10.11646/zootaxa.5048.1.9 PDF

Pfeiffer, M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58. PDF

Pfeiffer, M.; Schultz, R.; Radchenko, A.; Yamane, S.; Woyciechowski, M.; Aibek, U.; Seifert, B. 2007. A critical checklist of the ants of Mongolia (Hymenoptera: Formicidae). Bonner Zoologische Beiträge 55:1-8. PDF

Pfitzer, D. W. 1951. A new species of Smithistruma from Tennessee (Hymenoptera: Formicidae). Journal of the Tennessee Academy of Science 26:198-200. PDF