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Acromyrmex fracticornis : ウィキペディア英語版 | Acromyrmex fracticornis
''Acromyrmex fracticornis'' is a species of leaf-cutter ant, a New World ant of the subfamily Myrmicinae of the genus ''Acromyrmex''. This species is from one of the two genera of advanced attines (fungus-growing ants) within the tribe Attini. It is found in the wild naturally in southern Brazil, Paraguay and northern Argentina. ''Acromyrmex fracticornis'' colony densities are positively correlated with basal grass coverage and the amount of grazing damage. ''A. fracticornis'' preferentially harvested tender grass blades that showed little or no previous damage by other invertebrates. They preferentially harvest ''Digitaria smutsii'' and ''Panicum maximum'' more often than other species, and ''Pennisetum purpureum'', ''Pennisetum ciliare'' and ''Brachiaria decumbens'' were selected significantly less often. == Synonyms ==
* ''Acromyrmex jorgenseni'' Gonçalves, 1961 * ''Moellerius fracticornis'' Forel, 1909
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