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Samšiňák, K. 1951. Formica fusca r. lemani Bondr. (Hym. Formic.). Casopis Ceskoslovenské Spolecnosti Entomologické 48:122-127. PDF

Wheeler, W. M. 1903. [Untitled. Formica sanguinea subnuda sp. nov. attributed to W.M. Wheeler.]. P. 73 in: Viereck, H. L. 1903. Hymenoptera of Beulah, New Mexico. [part]. Transactions of the American Entomological Society 29:56-87. PDF

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Latreille, P. A. 1817e. Nouveau Dictionnaire d'Histoire Naturelle, appliquée aux Arts, à l'Agriculture, à l'Economie rurale et domestique, à la Médecine, etc. Nouvelle édition. Tome 10. Paris: Déterville, 591 pp.

Cole, A. C., Jr. 1956d. In defense of the integrity of an ant. Journal of the Tennessee Academy of Science 31:212-214. PDF

Bernard, F. 1981a. Variabilité des proportions biométriques chez les Plagiolepis, avec description de Pl. hoggarensis n. sp. (Hym. Formicidae). Bulletin de la Société Entomologique de France 86(5-6):169-172. PDF

Gregg, R. E. 1952b. The female of Formica opaciventris Emery (Formicidae). Psyche (Cambridge) 59:13-19. PDF

Wheeler, W. M. 1912c. New names for some ants of the genus Formica. Psyche (Cambridge) 19:90. PDF

Notes: Stamp date in MCZ library: 1912.08.01.

Cole, A. C., Jr. 1956f. Studies of Nevada ants. III. The status of Formica nevadensis Wheeler (Hymenoptera: Formicidae). Journal of the Tennessee Academy of Science 31:256-257. PDF

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Wheeler, W. M. 1906f. New ants from New England. Psyche (Cambridge) 13:38-41. PDF

Notes: Stamp date in MCZ library: 1906.06.30.

Lucas, H. 1854. Essai sur les animaux articulés qui habitent l'ile de Crète. Revue et Magasin de Zoologie Pure et Appliquée 6(2):487-491. PDF

Notes: Publication info: Paris, Bureau de la Revue et Magasin de Zoologie, [1849-

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Hakala, S. M.; Seppä, P.; Heikkilä, M.; Punttila, P.; Sorvari, J.; Helanterä, H. 2018. Genetic analysis reveals Finnish Formica fennica populations do not form a separate genetic entity from F. exsecta. PeerJ 6:23 pp. e6013. I 10.7717/peerj.6013 PDF

Snelling, R. R. 1969c. Notes on the systematics and dulosis of some western species of Formica, subgenus Raptiformica (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 71:194-197. PDF

Cole, A. C., Jr. 1943a ("1942"). Synonyms of Formica difficilis Emery (Hymenoptera: Formicidae). Annals of the Entomological Society of America 35:389. PDF

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Borowiec, L.; Salata, S. 2022. A monographic review of ants of Greece (Hymenoptera: Formicidae). Vol. 1. Introduction and review of all subfamilies except the subfamily Myrmicinae. Part 1: text. Bytom: Natural History Monographs of the Upper Silesian Museum, 1-297. PDF

Emery, C. 1902d. [Untitled. Taxonomic changes in Cataglyphis attributed to Emery.]. P. 463 in: Forel, A. 1902i. Fourmis d'Algérie récoltées par M. le Dr. K. Escherich. Annales de la Société Entomologique de Belgique 46:462-463. PDF

Berkelhamer, R. C. 1980. Reproductive strategies in ants: A comparison of single-queened versus multiple-queened species in the subfamily Dolichoderinae (Hymenoptera: Formicidae). Berkeley, CA: University of California Berkeley, i-v + 234 pp. PDF

Notes: Doctoral thesis / Dissertation

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Tohmé, H.; Tohmé, G. 1985. Contribution à l'étude systématique et bioécologique de Cataglyphis frigida (André) (Hymenoptera, Formicidae, Formicinae). Revue Française d'Entomologie (Nouvelle Série) 7:83-88. PDF