Detection of diploid males in a natural colony of the cleptobiotic bee Lestrimelitta sp (Hymenoptera, Apidae)

Reaction of Melipona rufiventris lepeletier to citral and against an attack by the Cleptobiotic bee Lestrimelitta limao (Smith) (Hymenoptera: Apidae: Meliponina).

A new species of the stingless bee Trichotrigona (Hymenoptera: Apidae, Meliponini).

Trichotrigona camargoiana sp. nov. from Candeias do Jamari, Rondônia, Brazil is described and illustrated, along with nesting and behavior, as the second species of the rare and unusual genus Trichotrigona Camargo & Moure, 1983. The new species differs from T. extranea Camargo & Moure, 1983 by having plumose setae on the face and mesepisterna, wing setae predominantly yellow and black metatibia...

Transcript levels of ten caste-related genes in adult diploid males of Melipona quadrifasciata (Hymenoptera, Apidae) - A comparison with haploid males, queens and workers

In Hymenoptera, homozygosity at the sex locus results in the production of diploid males. In social species, these pose a double burden by having low fitness and drawing resources normally spent for increasing the work force of a colony. Yet, diploid males are of academic interest as they can elucidate effects of ploidy (normal males are haploid, whereas the female castes, the queens and worker...

Effects of Novel Pesticides on Bumble Bee (Hymenoptera: Apidae) Colony Health and Foraging Ability

Two experiments were conducted testing for lethal and sublethal effects of the transgenicproteinsCry1Acandchitinase, and thechemical seedand soil treatment imidaclopridonbumble bees (Bombus occidentalis Greene and B. impatiens Cresson, Hymenoptera: Apidae). In the Þrst experiment, B. occidentalis colonies were exposed to realistic residue levels of Cry1Ac, chitinase, and imidacloprid found in p...

Euglossa anodorhynchi sp. n. (Hymenoptera: Apidae), a new orchid bee from southern Brazil.

Euglossa anodorhynchi sp. n. (Hymenoptera: Apidae) is described from Joinville, Santa Catarina, southern Brazil.