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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.

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.

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

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

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

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

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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

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

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Petal, J. 1963b. Materialy do znajomosci mrówek (Formicidae, Hymenoptera) Lubelszczyzny (V-VI). Fragmenta Faunistica (Warsaw) 10:463-472. PDF

Petal, J. 1963c. Données pour la morphologie de Myrmica rugulosoides For. et Leptothorax nigrescens Ruzsky (Hymenoptera, Formicidae). Bulletin de l'Académie Polonaise des Sciences. Série des Sciences Biologiques 11:379-382. PDF

Petal, J. 1964 ("1963"). Fauna mrówek projektowanego rezerwatu torfowiskowego Rakowskie Bagno k. Frampola (woj. lubelskie). Annales Universitatis Mariae Curie-Sklodowska. Sectio C. Biologia 18:143-173. PDF

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.

Perris, E. 1878 ("1877"). Rectifications et additions à mes promenades entomologiques. Annales de la Société Entomologique de France (5)7:379-386. PDF

Perty, M. 1833. Delectus animalium articulatorum, quae in itinere per Brasiliam annis MDCCCXVII-MDCCCXX jussu et auspiciis Maximiliani Josephi I. Bavariae regis augustissimi peracto, collegerunt Dr. J. B. Spix et Dr. C. F. Ph. de Martius. Fasc. 3. Monachii [= Munich]: published by the author, pp. 125-224.

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Petal, J. 1961. Materialy do znajomosci mrówek (Formicidae) Lubelszczyzny. (I-IV). Fragmenta Faunistica (Warsaw) 9:135-151.

Petal, J. 1963a ("1962"). Formica forsslundi Lohm. ssp. strawinskii n. ssp. Annales Universitatis Mariae Curie-Sklodowska. Sectio C. Biologia 17:195-202. PDF

Perris, E. 1876. Nouvelles promenades entomologiques. [part]. Annales de la Société Entomologique de France (5)6:177-244. PDF

Notes: First part of the article (pp. 171-176) was published 24 July 1876.