Peeters, C. 1993. Monogyny and polygyny in ponerine ants with or without queens. Pp. 234-261 in: Keller, L. (ed.) 1993. Queen number and sociality in insects. Oxford: Oxford University Press, 451 pp. PDF

Peeters, C. 1991a. The occurrence of sexual reproduction among ant workers. Biological Journal of the Linnean Society 44:141-152.

Peeters, C. 1991b. Ergatoid queens and intercastes in ants: two distinct adult forms which look morphologically intermediate between workers and winged queens. Insectes Sociaux 38:1-15.

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. 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.; 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.

Penev, S.; Ronchetti, G. 1965. Ricerche sulla distribuzione delle formiche del gruppo Formica rufa nella Bulgaria nord-orientale. Collana Verde 16:305-311.

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.

Perkins, R. C. L. 1891. Male and worker characters combined in the same individual of Stenamma westwoodi. Entomologist's Monthly Magazine 27:123-124. PDF

Perkins, R. C. L. 1924. The aculeate Hymenoptera of Devon. Report and Transactions of the Devonshire Association for the Advancement of Science, Literature and Art 55:188-241.

Notes: Ants pp. 238-241.

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.

Péru, L. 1984. Individus tératologiques chez les fourmis Leptothorax. Actes des Colloques Insectes Sociaux 1:141-149.

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

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.; Pisarski, B. 1993. Formicidae. Pp. 253-262 in: Górny, M.; Grüm, L. (eds.) 1993. Methods in soil zoology. Amsterdam: Elsevier, xii + 459 pp.

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

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

Pearson, B.; Child, A. R. 1980. The distribution of an esterase polymorphism in macrogynes of Myrmica rubra Latreille. Evolution 34:105-109.

Pardo Vargas, R. 1964. Clave para identificar los Formicidae de la Provincia de Chiclayo. Revista Peruana de Entomología 7:98-102.

Parfitt, E. 1880. The fauna of Devon. Hymenoptera. Section Aculeata. Report and Transactions of the Devonshire Association for the Advancement of Science, Literature and Art 12:501-559.

Notes: Ants pp. 506-510, 513-518, 559.

Parker, G. H. 1938. Biographical memoir of William Morton Wheeler 1865-1937. Biographical Memoirs. National Academy of Sciences 19:203-241.

Pascovici, V. D. 1979. Espèces du groupe Formica rufa L. de la Rep. Soc. de Roumanie et leur utilisation dans la lutte contre les ravageurs forestiers. Bulletin SROP [Section Regional Ouest Paléarctique, Organisation Internationale de Lutte Biologique] 1979(II-3):111-134.

Pascovici, V. D. 1981. Le specie del gruppo Formica rufa L. in Romania e la loro utilizzazione nella lotta contro gli insetti distruttori delle foreste. Collana Verde 59:165-183.

Pascovici, V. D.; Ronchetti, G. 1965. Il gruppo Formica rufa in Romania. Collana Verde 16:297-304. PDF