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Poldi, B. 1989. Studi sulla palude del Busatello (Veneto - Lombardia). 23. Gli imenotteri formicidi. Memorie del Museo Civico di Storia Naturale di Verona (II Serie). Sezione Scienze della Vita (A: Biologica). 7:203-218.
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Pontin, A. J. 1957. The Formica fusca group (Hym., Formicidae) on Lundy Island. Entomologist's Monthly Magazine 93:36.
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Pontin, A. J. 1976b. Anergates atratulus (Schenck) (Hym., Formicidae) in Surrey. Entomologist's Monthly Magazine 111:187.
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Pressick, M. L.; Herbst, E. 1973. Distribution of ants on St. John, Virgin Islands. Caribbean Journal of Science 13:187-197.
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Preuss, G. 1956. Zum Vorkommen bemerkenswerter Ameisen in Schleswig-Holstein. Faunistische Mitteilungen aus Norddeutschland 1(7):9-12.
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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.

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