Atlantic flower-invertebrate interactions: A data set of occurrence and frequency of floral visits.

Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the effects of environmental factors on ecological processes. Gathering such data is, however, costly and time-consuming, especially in the highly diverse tropics.

Performance, Effectiveness, and Efficiency of Honeybees as Pollinators of Coffea arabica (Gentianales, Rubiaceae).

Studies in crop plants analyzing floral biology in conjunction with effectiveness and efficiency of pollinators on pollen transfer and fruit formation are not common, although they are essential to provide better management actions. On this base, we selected a farm in Bahia, Brazil, to study pollination on coffee plants (Coffea arabica L.).

First record of Phanuropsis laniger Johnson in Brazil and first record of Phanuropsis semiflaviventris Girault in Amazonas (Hymenoptera: Platygastridae) with notes of their hosts, stink-bugs of cupuaçu.

Background: We report the first record and collection of Phanuropsis laniger Johnson, 1987, for Brazil since its original description. In addition we expand the distribution of Phanuropsis semiflaviventris Girault, 1916, for Amazonas, Brazil and present an updated list of records for both species with the occurrence of P. semiflaviventris in egg of stink-bugs on cupuaçu (Theobroma grandiflorum).

A new species of Tropidopedia from the Amazon rainforest, Brazil (Hymenoptera: Apidae), with a revised phylogenetic overview of the genus.

We describe a new species of the bee tribe Tapinotaspidini, Tropidopedia guaranae Mahlmann & Oliveira sp. n. from the Amazon rainforest, Amazonas, Brazil.

Male sleeping aggregation of multiple Eucerini bee genera (Hymenoptera: Apidae) in Chapada Diamantina, Bahia, Brazil.

Males of some groups of bees have to find a place outside the nests to sleep, sometimes forming "male sleeping aggregations". Here we report the first record of "dense" male sleeping aggregation of two different genera of Eucerini bees observed in Bahia, Brazil. We discuss the possible aim of this kind of aggregation as well the plant utilized on aggregate.