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Nest Architecture of Atta laevigata (F. Smith, 1858) (Hymenoptera: Formicidae)

The internal structure of three nests of Atta laevigata was studied in Botucatu city, São Paulo State, Brazil, finding that the nests of this species are the deepest within the genus Atta and have the highest number of chambers.
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Bionomics and identification of Acromyrmex (Hymenoptera: Formicidae) through an illustrated key.

Dept. Producao Vegetal - Defesa Fitossanitaria Faculdade de Ciencias Agronomicas UNESP - Sao Paulo State University, Rua Jose Barbosa de Barros, 1780, Botucatu, Sao Paulo

Larval isolation and brood care in Acromyrmex leaf-cutting ants

The results suggest that the interactions are complex, involving a number of behaviours that probably serve different functions, and that workers are to some extent able to assess the individual needs of larvae.
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Comparison of the Ant Assemblages in Three Phytophysionomies: Rocky Field, Secondary Forest, and Riparian Forest—A Case Study in the State Park of Ibitipoca, Brazil

Ant assemblages are almost all related with the vegetation composition and so can provide us important information for conservation strategies, which are especially relevant to an environmentally…
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Microdon tigrinus (Diptera, Syrphidae): Populational fluctuations and specificity to the nest of Acromyrmex coronatus (Hymenoptera: Formicidae)

Laboratorio de Insetos Sociais-Praga Depto. Producao Vegetal - Defesa Fitossanitaria Fazenda Experimental Lageado, Rua Jose Barbosa de Barros, 1780, 18610-307, Botucatu, SP

Sanitizing the fortress: protection of ant brood and nest material by worker antibiotics

The results show that the defense of brood and sanitization of nest material are important functions of the antimicrobial secretions of adult ants and that ubiquitous, opportunistic fungi may be a more important driver of the evolution of these defenses than rarer, specialist parasites.
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Ant farmers practice proactive personal hygiene to protect their fungus crop

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The effects of genotype, caste, and age on foraging performance in leaf-cutting ants

Examining the foraging performance of workers of the leaf-cutting ant Acromyrmex subterraneus found that patrilines within colonies differed significantly in the size of fragment cut, and the speed of cutting and transporting fragments when controlling for both ant size and fragment size in the analyses.
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Nest architecture in polydomous grass-cutting ants (Acromyrmex balzani)

ABSTRACT Acromyrmex balzani is a grass-cutting ant species frequently found in Cerrado areas. However, little is known about the architecture of the polydomous nests of this ant. Fifteen A. balzani…
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Dominance hierarchy in different stages of development in colonies of the neotropical eusocial paper wasp Polistes versicolor (Hymenoptera, Vespidae)

As the colony population increases, the frequency of dominance interactions in P. versicolor also increases, and females in the higher rank positions performed most of the aggressive interactions, even though such interactions may have involved all individuals of the colonies.
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