Pena Cantero A. L., Vervoort W., 1995: Redescription of Oswaldella antarctica (Jäderholm, 1904) (Cnidaria Hydrozoa) with notes on related species (Notes on Antarctic hydroids, I). 12 pp. 

 Pena Cantero A. L., Vervoort W., 1997: On Oswaldella billardi Briggs, 1938 and O. erratum spec. nov., two antarctic hydroid species (Cnidaria, Hydrozoa). 8 pp. Zoologische Mededelingen Leiden 71(22): 269-276.

 Penman D. R., Chapman R. B., Bowie M. H., 1988: Selection for behavioral resitance in twospotted spider mite (Acari: Tetranychidae) to Flucythrinate. 5 pp. 

 Pereira L. A., Minelli A., 1992: A new record of Schendyloides alacer (Pocock, 1891) from the Falkland Islands and a redescription of the species (Chilopoda Geophilomorpha). 8 pp. 

 Pereira L. A., Minelli A., Barbieri F., 1994: New and little known geophilomorph centipedes from Amazonian inundation forests near Manaus, Brazil (Chilopoda, Geophilomorpha). 42 pp. Amazoniana 13(1-2): 163-204.

 Pereira L. A., Minelli A., Barbieri F., 1995: Description of nine new centipede species from Amazonia and related matters on Neotropical geophilomorphs (Chilopoda: Geophilomorpha). 92 pp. Amazoniana 13(3-4): 325-416.

 Pereira L. A., Minelli A., Foddai D., 1997: On the true identity of Geophilus tropicus Brölemann, 1898, a geophilid species from Venezuela (Chilopoda Geophilomorpha Geophilidae). 10 pp. 

 Perel T. S., 1972: Novye nakhozhdenija redkich vidov Lumbricidae. 8 pp. 

 Perel T. S., Sokolskaja N. L., 1972: Tipy Oligochaeta v kollekcii zoologitsheskogo muzeja MGU. 4 pp. 

 Pérez-íňigo C., 1969: Los ácaros y la importancia de su estudio. 19 pp. 

 Pesarini C., 1991: Primo contributo per una fauna araneologica del Ferrarese (Arachnida: Araneae) 30 pp. Quad. Studi Nat. Romagna 4: 5-34.

 Pesce G. L., 1992: Cyclopids from ground waters of Turkey, and description of Diacyclops languidoides anatolicus n. ssp. (Crustacea, Copepoda). 12 pp. [EVE950] Fragmenta entomologica 24(1): 1-12.

 Pesce G. L., 1996: Towards a revision of Cyclopinae Copepods (Crustacea, Cyclopidae). 12 pp. [EVE951] Fragmenta entomologica 28(2): 189-200.

 Pesce G. L., Galassi D. P., Stoch F., 1994: Primo rinvenimento del genere Maraenobiotus Mrázek in Italia (Crustacea, Copepoda, Canthocamptidae). 13 pp. [EVE952] Fragmenta entomologica 25(2)(1993): 161-173.

 Peskov V. M., Emelyanov I. G., 2000: Phentics and phenogeography of the water vole (Arvicola terrestris). 6 pp. Vestnik zoologii 34(3): 39-44.

 Pessani D., Premoli M. C., 1992: Chromatic varieties in a Mediterranean population of the hermit crab Cestopagurus timidus (Roux, 1830) (Crustacea, Decapoda, Paguridae). 6 pp. (in English). Bolletino del Museo regionale di Scienze Naturali – Torino 10(1): 173-178.

 Petanovic R., 1985: Studies on Eriophyid mites (Acarida: Eriophyoidea) of Yugoslavia, I. 6 pp. 

 Peters R., Crome W., 1961: Zwei Funde der für Österreich neuen Gattung Eucta Simon, 1881 im Neusiedlersee-Gebiet (Araneae: Tetragnathidae). 4 pp. [ARA 1008] Deutsche Entomologische Zeitschrift (N.F.) 9(3-4): 304-307.

 Petersen B., 1966: The Noona Dan Expedition, 1961-62. Insects and other land arthropods. 22 pp. [M39] 

 Petkovski S. T., 1991: Moina weismanni Ishikawa, 1896, a rare East Palearctic faunistic element from S. W. Yugoslavia (Crustacea, Cladocera). 7 pp. Spixiana 14(1): 1-7.

 Petr V., 1989: Revision of morphology and ecology of Bohemura Jahni Jaekel, 1903 (Ophiuroidea, Protasteridae) from Bohemian Middle Ordovician. 28 pp. Acta Musei Nationalis Pragae 45B(1): 1- 28.

 Petr V., 1989: Two new species of brittle-stars (Ophiuroidea, Protasteridae) from the upper Ordovician of Bohemia. 11 pp. Acta Musei Nationalis Pragae 45B(2): 61-71.

 Petran A., 1968: Sur la dynamique du zooplancton du littoral roumain de la Mer Noire (la zone jusqu’a 30 m de profondeur). 7 pp. 

 Petrbok J., 1952: Měkkýši plistocenní a holocenní marinní rasy Černého moře u Balčiku v Bulharsku a marinní měkkýši bulharského plistocenu. [The molluscs from one plistocene and one holocene terrace of the Black-sea at Balčík in Bulgaria and the marinne molluscs of the bulgarien plistocene.] 19 pp. Acta Musei Nationalis Pragae 8B(2): 3-21.

 Petrov A. A., 1999: Phenetical approach to the classification of the family Monocelididae (Turbellaria, Proseriata). 7 pp. Zoological sessions 281(1998): 39-45.

 Petrova A. D., 1982: Ekologo-faunističeskie fruppirovki kleščej-makrochelid (Parasitiformes, Mesostigmata, Macrochelidae) v Moskovskoj oblasti i značenie koprofilnych vidov. 14 pp. 

 Petrova A. D., 1982: O faune počvoobitajuščich gamazovych kleščej (Parasitiformes, Mesostigmata) Moskovskoj oblasti. 8 pp. 

 Petru V., Vestemean I., Costea I., 1968: Untersuchungen über die Beeinflussung der Lebensgemeinschaften des Schiel (Jiu-) flusses durch die Vorherrschende Mineralische Verunreinigung. 8 pp. 

 Petrunkevitch A., 1948: The case of Phalangiotarbus subovalis (Woodward). 10 pp. 

 Pfleger V., 1980: Snails of the Helicellinae (Gastropoda) sub-family in CSSR). 19 pp. [M25] Acta Musei Nationalis Pragae 36B(2-3): 53-171.

 Pfleger V., 1982: Malakocenóza transektu Dobrá – vrchol Stožce u Volar. 47 pp. Acta Musei Nationalis Pragae 38B(1-2): 1-47.

 Pickford G. E., 1939: XXX. The Vampyromorpha. A new order of Dibranchiate Cephalopoda. 13 pp. 

 Pilato G., 1998: Microhypsibiidae, new family of eutardigrades, and description of the new genus Fractonotus (Tardigrada). 6 pp. Spixiana 21(2): 129-134.

 Pilipiuk I., 2000: Diversification of enchytraeid communities (Enchytraeidae, Oligochaeta) of the South Basin of the Biebrza National Park. 13 pp. [EVE 575] Fragmenta faunistica 43(1-8): 15-27.

 Pilipiuk I., 2001: Enchytraeid communities (Enchytraeidae, Oligochaeta) of the ash-alder carr (Circaeo-Alentum) in two regions of Poland. 11 pp. [EVE 576] Fragmenta faunistica 44(1): 21-31.

 Pilipiuk I., 2003: Enchytraeid fauna (Oligochaeta, Enchytraeidae) in the Bialowieza Primeval Forest. 17 pp. [EVE 829] Fragmenta faunistica 46(1): 1-17.

 Pinkster S., Stock J. H., 1967: Range extension in 1966 of the alien amphipod, Gammarus tigrinus Sexton, 1939, in the Netherlands. 6 pp. 

 Pinto R. M., Vicente J. J., Noronha D., Fábio S. P., 1991: New records for the nematodes Ascaridia columbae (Gmelin) Travassos, Acuaria mayon Lent, Freitas Proenca and Aproctella stoddardi Cram in Brazilian birds, with redescription of the species. 6 pp. Revta bras. Zool. 8(1-4): 1-6.

 Pinto-da-Rocha R., 1993: Invertebrados cavernícolas da porcao meridional da província espeleológica do Vale do Ribeira, Sul do Brasil. 27 pp. Revta bras. Zool. 10(2): 229-255.

 Pinto-da-Rocha R., Soares H. E. M., 1995: Revisao sistemática de Ogloblinia Canals (Opiliones, Gonyleptidae, Pachylinae). 11 pp. Revta bras. Zool. 12(1): 55-65.

 Pirchegger H., Thaler K., 1999: Zur Unterscheidung der Männchen von Pardosa blanda (C. L. Koch) und P. torrentum Simon (Araneae, Lycosidae). 7 pp. Mitt. Schweiz. entomol. Ges. 72(1-2): 47-53.

 Pires A. M. S., 1996: The gnathiids from the Brazilian southeastern continental shelf and slope: distribution, ecological notes and description of three new species (Crustacea, Isopoda, Gnathiidae). 16 pp. Spixiana 19: 1-16.

 Pižl V., 1995: Oligochaeta: Lumbricidae. 4 pp. 

 Pižl V., Houšková L., 1994: Allobophora moravica, a new earthworm from the Czech Republic. 3 pp. 

 Pižl V., Sterzyňska M., 1991: The influence of urbanization on the earthworm infection by monocystid gregarines. 10 pp. 

 Pižl V., Sterzyňska M., 1991: The influence of urbanization on the earthworm infection by monocystid gregarines. 10 pp. [EVE 582] Fragmenta Faunistica 35(14): 203-212.

 Platnick N. I., Goloboff P. A., 1985: On the monophyly of the spider suborder Mesothelae (Arachnida: Araneae). 6 pp. Journal of the New York Entomological Society 93(4): 1265-1270.

 Plumari M., 2008: Specie di Celaenopsidae, Parasitidae, Digamasellidae e Ascidae nuove per l’Italia (Acarina Mesostigmata). 16 pp. Bolletino della Societa Entomologica Italiana 140(2): 75-90.

 Podgornova G. P., Alyuart de Lya Krus M., Dmitrieva T. I., Lomakin V. V., Timofeev P. V., Sharpilo V. P., 1991: Evolyuciya kariotnikov nematod nadsemejstv Trichostrongyloidea i Strongyloidea. 9 pp. Vestnik Zool. 1991(2): 49-57.

 Pokryszko B. M., 1994: On the mono()phyly and classification of the Orthurethra/Pupilloidea (Gastropoda: Pulmonata: Stylommatophora). 20 pp.  Genus 5(4): 371-390.