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Bolton, B. 1973b. The ant genus Polyrhachis F. Smith in the Ethiopian region (Hymenoptera: Formicidae). Bulletin of the British Museum (Natural History). Entomology 28:283-369. PDF
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Radoszkovsky, O. 1881. Hyménoptères d'Angola. Jornal de Sciencias Mathematicas, Physicas e Naturaes 8:197-221. PDF
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Branstetter, M. G.; Sáenz, L. 2012. Las hormigas (Hymenoptera: Formicidae) de Guatemala. Pp. 221-268 in: Cano, E. B.; Schuster, J. C. (eds.) 2012. Biodiversidad de Guatemala. Volumen 2. Guatemala: Universidad del Valle de Guatemala, iv + 328 pp. PDF
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Ravasini, G. 1923. Un'escursione coleotterologica sul Monte Cavallo ed al Cansiglio. Rassegna della Società Alpina delle Giulie 24:26.
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Parapura, E. 1972. An ergatandromorph Formica exsecta Nyl. (Hymenoptera, Formicidae) from Poland. Bulletin de l'Académie Polonaise des Sciences. Série des Sciences Biologiques 20:763-767. PDF
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Wheeler, W. M. 1914f. New and little known harvesting ants of the genus Pogonomyrmex. Psyche (Cambridge) 21:149-157. PDF

Notes: Stamp date in MCZ library: 1914.11.07.

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Emery, C. 1917b. Formiche ibride. Rendiconti delle Sessioni della Reale Accademia delle Scienze dell'Istituto di Bologna. Classe di Scienze Fisiche (n.s.)21:23-29.

Notes: Session of 26 November 1916.

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