Petit, R. E.; Callomon, P. 2009. The distressing case of Polyhomoa itoi Azuma, 1949 and Kyidris mutica Brown, 1949. Conchologia Ingrata 2:1-4. PDF

Perkovsky, E. E. 2009. Differences in ant (Hymenoptera, Formicidae) species composition between weight fractions of Rovno amber. Paleontological Journal 43:1087-1091. PDF

Pang, G.-F.; Qin, F.; Zhou, S.-Y.; Qin, X.-M. 2009. Molecular phylogenetic research on some species of Camponotus (Hymenoptera: Formicidae). Journal of Guangxi Normal University (Natural Science Edition) 27:62-66.

Pall, J. L. M.; Quirán, E. M. 2009. Redescripción de la obrera de Solenopsis leptanilloides (Hymenoptera: Formicidae) y primera cita de la provincia de La Pampa (Argentina). Revista de la Sociedad Entomológica Argentina 68:381-383. PDF

Noon-Anant, N.; Kohout, R.; Watanasit, S.; Yamane, S.; Wiwatwitaya, D. 2009. Additional records of Polyrhachis (Myrmatopa) varicolor Viehmeyer (Formicidae: Formicinae) from Southern Thailand, with notes on Its nesting habits. The Natural History Journal of Chulalongkorn University 9 (2):171-188. PDF

Nakanishi, A.; Nishino, H.; Watanabe, H.; Yokohari, F.; Nishikawa, M. 2009. Sex-specific antennal sensory system in the ant Camponotus japonicus: structure and distribution of sensilla on the flagellum. Cell and Tissue Research 338:79-97. 10.1007/s00441-009-0863-1 PDF

Moscaliuc, L. 2009. Notes on the distribution of the genus Plagiolepis Mayr, 1861 (Hymenoptera; Formicidae) in Dobrogea, and the first record of Plagiolepis obscuriscapa Santschi, 1923 in Romania. Travaux du Muséum National d’Histoire Naturelle "Grigore Antipa" 52:297-301. PDF

Morgan, E. D. 2009. Trail pheromones of ants. Physiological Entomology 34:1-17. PDF

Moreau, C. S. 2009. Inferring ant evolution in the age of molecular data (Hymenoptera: Formicidae). Myrmecological News 12:201-210. PDF

McArthur, A. J. 2009. New species, new status and new synonymy for Camponotus from Australia (Hymenoptera: Formicidae). Myrmecological News 12:273-286. PDF

Markó, B.; Ionescu-Hirsch, A.; Szász-Len, A. 2009. Genus Camponotus Mayr, 1861 (Hymenoptera: Formicidae) in Romania: distribution and identification key to the worker caste. Entomologica Romanica 14:29-41. PDF

Mackay, W. P.; Delsinne, T. 2009. A new species of carpenter ant (Hymenoptera: Formicidae: Camponotus) from Paraguay with a key to the New World members of the maculatus species complex. Sociobiology 53:487-498. PDF

Lush, M. J. 2009. Some ant records (Hymenoptera: Formicidae) from the Middle East. Zoology in the Middle East 47:114-116. 10.1080/09397140.2009.10638357

Longino, J. T.; Cox, D. J. 2009. Pheidole bilimeki reconsidered (Hymenoptera: Formicidae). Zootaxa 1985:34-42. PDF

Longino, J. T. 2009. Additions to the taxonomy of New World Pheidole (Hymenoptera: Formicidae). Zootaxa 2181:1-90. PDF

Lach, L.; Parr, C. L.; Abbott, K. (eds) 2009. Ant ecology. Oxford: Oxford University Press, xvii + 410 pp.

LaPolla, J. S. 2009. Taxonomic revision of the Southeast Asian ant genus Euprenolepis. Zootaxa 2046:1-25. PDF

Kohout, R. J. 2009. A new species and nomenclatural changes in the subgenus Polyrhachis (Cyrtomyrma) Forel. Australian Entomologist 36:37-48. PDF

Klingenberg, C.; Brandão, C. R. F. 2009. Revision of the fungus-growing ant genera Mycetophylax Emery and Paramycetophylax Kusnezov rev. stat., and description of Kalathomyrmex n. gen. (Formicidae: Myrmicinae: Attini). Zootaxa 2052:1-31. PDF

Kelber, C.; Rössler, W.; Roces, F.; Kleineidam, C. J. 2009. The antennal lobes of fungus-growing ants (Attini): neuroanatomical traits and evolutionary trends. Brain, Behavior and Evolution 73:273-284. PDF

Kautz, S.; Lumbsch, H. T.; Ward, P. S.; Heil, M. 2009. How to prevent cheating: a digestive specialization ties mutualistic plant-ants to their ant-plant partners. Evolution 63:839-853. PDF

Karaman, M. G. 2009. An introduction to the ant fauna of Macedonia (Balkan Peninsula), a check list (Hymenoptera, Formicidae). Natura Montenegrina 8:151-162. PDF

Johnson, R. A.; Overson, R. P. 2009. A new North American species of Pogonomyrmex (Hymenoptera: Formicidae) from the Mohave desert of eastern California and western Nevada. Journal of Hymenoptera Research 18:305-314. PDF

Johnson, R. A. 2009. [Untitled. Pogonomyrmex mohavensis Johnson, n sp.]. Pp. 308-310 in: Johnson, R. A.; Overson, R. P. 2009. A new North American species of Pogonomyrmex (Hymenoptera: Formicidae) from the Mohave desert of eastern California and western Nevada. Journal of Hymenoptera Research 18:305-314. PDF

Jansen, G.; Savolainen, R.; Vepsäläinen, K. 2009. DNA barcoding as a heuristic tool for classifying undescribed Nearctic Myrmica ants (Hymenoptera: Formicidae). Zoologica Scripta 38:527-536. PDF

Ionescu-Hirsch, A.; Markó, B.; Csősz, S. 2009. Camponotus tergestinus Müller, 1921 (Hymenoptera: Formicidae): first records of a rare species for Romania and Hungary. Entomologica Romanica 14:19-22. PDF

Hosoishi, S.; Ogata, K. 2009a. A taxonomic revision of the Asian endemic subgenus Physocrema of the genus Crematogaster (Hymenoptera: Formicidae). Zootaxa 2062:15-36. PDF

Hosoishi, S.; Ogata, K. 2009b. A checklist of the ant genus Crematogaster in Asia. Bulletin of the Institute of Tropical Agriculture Kyushu University 32:43-83. PDF

Hosoishi, S. 2009. A new species from Crematogaster the subgenus Orthocrema in Asia (Hymenoptera, Formicidae). Japanese Journal of Systematic Entomology 15:259-262. PDF

Hita Garcia, F.; Fischer, G.; Peters, M. K.; Snelling, R. R.; Wägele, J. W. 2009. A preliminary checklist of the ants (Hymenoptera: Formicidae) of Kakamega Forest (Kenya). Journal of East African Natural History 98:147-165. PDF