Nota sobre abelhas Lestrimelitta rufipes (Freise) (Hymenoptera, Meliponina), atraídas por armadilhas com iscas odoríferas, na região Sul Fluminense do Estado do Rio de Janeiro

Abstract

This study was done each two months between August 2006 to May 2007 in a South Region in the State of Rio de Janeiro. The traps, a (Carvalho-47) model, were adjusted, then assembled at 9 o'clock and finally removed 48 hours after. In each place of the extraction, 4 traps were assembled, in a total of 20 in all the trail. During the experiment, eight worker bees of Lestrimelitta rufipes, were captured, and seven of them were attracted by methyl salicilate and one by cineole. Beside this essences, two more were used, eugenol and vanillin, but these two ones didn't collect any bees. All the bees were collected during November 2006. Even with such geographical distribution, L. rufipes hasn't been registered in this south region, and this is also the first registered collection of this specie using scent traps. It was not possible to identify the cause of the bee workers L. rufipes attraction by methyl salicilate and cineole, because these bees do not visit flowers, neither nets that could have this fragrance. The method of collection used by scent traps can be used for many purposes and among them the objective of knowing the richness and distribution of these types in different areas. Mesmo com ampla distribuição geográfica, L. rufipes não havia sido registrada na região Sul Fluminense, sendo também o primeiro registro de coletas dessa espécie através de armadilhas com iscas odoríferas. Não foi possível identificar o porquê da atração das operárias de L. rufipes ao salicilato de metila e cineole, uma vez que essas abelhas não visitam flores nem ninhos que poderiam conter tais fragrâncias. O método de coleta através de armadilhas com iscas odoríferas poderá ser empregado com diversos objetivos, entre eles, o de conhecer a riqueza e a distribuição desse gênero em diversas áreas. Palavras-chave: abelha cleptoparasita, coleta de recursos, levantamentos, odor.

The potential of arboreal pitfall traps for sampling nontargeted bee and wasp pollinators

“…Nevertheless, even with some sampling design limitations, our results showed that scent traps successfully collected specific groups of bees. Although this kind of trapping method was developed and is mainly used to sample orchid bees (Euglossini) (Dressler, 1982), our results corroborate some literature records of other non-target bee groups being attracted to the scents (Alves et al, 2011;Nemésio & Siqueira, 2011;Knoll & Santos, 2012). This observation points to the possibility of extending the usage of this kind of trap to studies focused on additional target groups, including hard-to-sample nocturnal bees such as Megalopta (Carvalho et al, 2012).…”