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

Phengsi, N.; Jaitrong, W.; Ruangsittichai, J.; Khachonpisitsak, S. 2018. A sibling species of Platythyrea clypeata Forel, 1911 in southeast Asia (Hymenoptera, Formicidae, Ponerinae). ZooKeys 729:87-102. 10.3897/zookeys.729.21378 PDF

Phillips, A. L.; Attewell, P. J. 2011. An occurrence of Lasius sabularum (Bondroit, 1918) and Lasius umbratus (Nylander, 1846) within the same nest in Lincolnshire, England. BWARS Newsletter Autumn 2011:22-24. PDF

Phillips, R. A. 1921. Nests of the ant Stenamma westwoodi discovered in Ireland. Irish Naturalist 30:125-127.

Phillips, S. A., Jr.; Rogers, W. M.; Wester, D. B.; Chandler, L. 1987. Ordination analysis of ant faunae along the range expansion front of the red imported fire ant in south-central Texas. Texas Journal of Agriculture and Natural Resources 1:11-15.

Phillips, S. A., Jr.; Vinson, S. B. 1980. Comparative morphology of glands associated with the head among castes of the red imported fire ant, Solenopsis invicta Buren. Journal of the Georgia Entomological Society 15:215-226.

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

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. 10.25221/fee.492.1 PDF

Picquet, N. 1958. Contribution à l'étude des larves de Formicidae de la Côte-d'Or. Travaux du Laboratoire de Zoologie et de la Station Aquicole Grimaldi de la Faculté des Sciences de Dijon 23:1-48.

Pidoplichko, I. H. (ed.) 1966. Insects of the Ukrainian Carpathians and Transcarpathians. [In Ukrainian.]. Kiev: Akademiya Nauk Ukrains'koi RSR, 176 pp.

Pie, M. R.; Tschá, M. K. 2009. The macroevolutionary dynamics of ant diversification. Evolution 63:3023-3030. PDF

Piek, T. (ed.) 1986. Venoms of the Hymenoptera. London: Academic Press, xi + 570 pp.

Piek, T. 1992. A toxinological argument in favour of the close relationship of Vespidae, Scoliidae, Tiphiidae, Mutillidae and Formicidae (Hymenoptera). Proceedings of the Section Experimental and Applied Entomology of the Netherlands Entomological Society 3:99-104.

Pierce, M. P.; Branstetter, M. G.; Longino, J. T. 2017. Integrative taxonomy reveals multiple cryptic species within Central American Hylomyrma Forel, 1912 (Hymenoptera: Formicidae). Myrmecological News 25:131-143. PDF

Pierce, M. P.; Leong, C.-M.; Guénard, B. 2019. A new species and new record of the cryptobiotic ant genus Ponera Latreille, 1804 (Hymenoptera, Formicidae) from Hong Kong. ZooKeys 867:9-21. 10.3897/zookeys.867.36139 PDF

Pierce, W. D.; Gibron, S. J. 1962. Fossil arthropods of California. 24. Some unusual fossil arthropods from the Calico Mountains nodules. Bulletin of the Southern California Academy of Sciences 61:143-151. PDF

Pietrantonio, P. V.; Holmes, S. P.; Jagge, C.; Frazier, S. K. 2002. Cloning of troponin C and other gene fragments from the red imported fire ant Solenopsis invicta Buren (Hymenoptera, Formicidae). Southwestern Entomologist Supplement 25:89-96.

Pietschker, H. 1910. Das Gehirn der Ameise. Jenaischen Zeitschrift für Naturwissenschaft 47 (N.F. 40 (1)):43-114. PDF

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.

Pijoan, M. 1928. Formicidae of southern California. Journal of Entomology and Zoology 20:37-42. PDF

Pilgrim, E. M.; von Dohlen, C. D.; Pitts, J. P. 2008. Molecular phylogenetics of Vespoidea indicate paraphyly of the superfamily and novel relationships of its component families and subfamilies. Zoologica Scripta 37:539-560. PDF