-Ants can nest in a wide variety of substracts. This paper shows Syagrus romanzoffi ana seed utilization by ants in an Atlantic secondary forest. We report 29 seeds occupied by small-bodied ants, with 27 of them showing at least two ant development stages. Although a large number of seeds were sampled, a low level of ant occupation was observed.KEY WORDS: Palm, nest place, Hymenoptera RESUMO -As formigas podem nidifi car em uma ampla variedade de substratos. Este estudo relata o uso das sementes de Syagrus romanzoffi ana em fl oresta atlântica secundária, como local para nidifi cação de formigas. Foram encontradas 29 sementes ocupadas por formigas de pequeno porte, sendo que 27 delas apresentaram pelo menos dois estágios de desenvolvimento de formigas. A taxa de ocupação foi baixa apesar de as sementes serem abundantes.
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