Pascual, R.; Tinaut, A. 1985. Evolución anual de las mirmecocenosis en las sierras de La Alfaguara y Harana (Granada. España) (HYM. Formicidae). Boletim da Sociedade Portuguesa de Entomologia. Suplemento 1(4):31-40.

Passera, L. 1967. Inhibitions interspécifiques déclenchées par les femelles fécondes des fourmis parasites Plagiolepis xene St. et Plagiolepis grassei Le Mas. Pas. Comptes Rendus (Hebdomadaires) des Séances de l'Academie des Sciences. Série D. Sciences Naturelles 265:1721-1724.

Passera, L. 1984. L'organisation sociale des fourmis. Toulouse: Editions Privat, 360 pp.

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.

Passerin d'Entrèves, P. 1983. "Faunae Ligusticae Fragmenta" e "Insectorum Liguriae species novae" di Massimiliano Spinola: note bibliografiche. Bollettino del Museo Regionale di Scienze Naturali. Torino 1:215-226.

Pasteels, J. M.; Crewe, R.; Blum, M. 1970. Étude histologique et examen au microscope électronique à balayage de la glande sécrétant la phéromone de piste chez deux Crematogaster nord-américains (Formicidae, Myrmicinae). Comptes Rendus (Hebdomadaires) des Séances de l'Academie des Sciences. Série D. Sciences Naturelles 271:835-838.

Pavan, M. 1959. Attivita' italiana per la lotta biologica con formiche del gruppo Formica rufa contro gli insetti dannosi alle foreste. Collana Verde 4:1-79. PDF

Pavan, M. 1979. Significance of ants of the Formica rufa group in Italy in ecological forestry regulation. Bulletin SROP [Section Regional Ouest Paléarctique, Organisation Internationale de Lutte Biologique] 1979(II-3):161-169.

Pavan, M.; Ronchetti, G. 1955. Studi sulla morfologia esterna e anatomia interna dell'operaia di Iridomyrmex humilis Mayr e ricerche chimiche e biologiche sulla iridomirmecina. Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 94:379-477. PDF

Pavan, M.; Ronchetti, G. 1972. Le formiche del gruppo Formica rufa in Italia nell'assestamento ecologico forestale. Waldhygiene 9:223-238. PDF

Pavan, M.; Ronchetti, G.; Vendegna, V. 1971. Corologia del gruppo Formica rufa in Italia (Hymenoptera: Formicidae). Collana Verde 30:1-93.

Pearson, B. 1982. The taxonomic status of morphologically-anomalous ants in the Lasius niger/Lasius alienus taxon. Insectes Sociaux 29:95-101.

Pearson, B. 1983. The classification of morphologically intermediate ants in the Lasius alienus/Lasius niger taxon. Further observations. Insectes Sociaux 30:100-105.

Palomeque, T.; Chica, E.; Díaz de la Guardia, R. 1990. Karyotype, C-banding, chromosomal location of active nucleolar organizing regions, and B-chromosomes in Lasius niger (Hymenoptera, Formicidae). Genome 33:267-272.

Palomeque, T.; Chica, E.; Díaz de la Guardia, R. 1993a. Karyotype evolution and chromosomal relationship between several species of the genus Aphaenogaster (Hymenoptera, Formicidae). Caryologia 46:25-40.

Palomeque, T.; Chica, E.; Díaz de la Guardia, R. 1993b. Supernumerary chromosome segments in different genera of Formicidae. Genetica 90:17-29.

Pamilo, P. 1982. Multiple mating in Formica ants. Hereditas (Lund) 97:37-45.

Pamilo, P. 1983. Genetic differentiation within subdivided populations of Formica ants. Evolution 37:1010-1022.

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.

Pamilo, P. 1990. Sex allocation and queen-worker conflict in polygynous ants. Behavioral Ecology and Sociobiology 27:31-36.

Pamilo, P.; Chautems, D.; Cherix, D. 1992. Genetic differentiation of disjunct populations of the ants Formica aquilonia and Formica lugubris in Europe. Insectes Sociaux 39:15-29.

Pamilo, P.; Rosengren, R. 1983. Sex ratio strategies in Formica ants. Oikos 40:24-35.

Pamilo, P.; Rosengren, R. 1984. Evolution of nesting strategies of ants: Genetic evidence from different population types of Formica ants. Biological Journal of the Linnean Society 21:331-348.

Pamilo, P.; Rosengren, R.; Vepsäläinen, K.; Varvio-Aho, S.-L.; Pisarski, B. 1978. Population genetics of Formica ants. I. Patterns of enzyme gene variation. Hereditas (Lund) 89:233-248.

Pamilo, P.; Sundström, L.; Fortelius, W.; Rosengren, R. 1994. Diploid males and colony-level selection in Formica ants. Ethology Ecology and Evolution 6:221-235.

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.; Vepsäläinen, K.; Rosengren, R. 1975. Low allozymic variability in Formica ants. Hereditas (Lund) 80:293-296.

Pamilo, P.; Vepsäläinen, K.; Rosengren, R. 1979. Population genetics of Formica ants II. Genic differentiation between species. Annales Entomologici Fennici 45:65-76.

Paramonov, S. Y. 1941. V. O. Karavaiev. Zbirnyk Prats' Zoolohichnoho Muzeyu 24:3-8.

Parapura, E.; Pisarski, B. 1971. Mrówki (Hymenoptera, Formicidae) Bieszczadów. Fragmenta Faunistica (Warsaw) 17:319-356. PDF