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Mar del Plata, Argentina

Montalva J.,University of Chile | Dudley L.,University of California at Santa Barbara | Arroyo M.K.,University of Chile | Retamales H.,University of Chile | Abrahamovich A.H.,Laboratorio Of Apidologia
Journal of Apicultural Research | Year: 2011

In the present work, we update floral associations and geographical distribution for four species of Bombus present in Chile, two native (B. dahlbom i and B. funebris) and two introduced species (B. terrestris and B. ruderatus). We also examine possible associations among native or introduced bees with native or introduced plant species. We found a significant non-random plant association among non-native bumble bee species and non-native plant species. Because of the distributional overlap between B. dahlbomii with the two non-native bee species, it is likely that B. dahlbom i interacts with these non-native bees. © IBRA 2011.

Hernandez O.A.,National Autonomous University of Mexico | Lucia M.,Laboratorio Of Apidologia | Alvarez L.J.,Laboratorio Of Apidologia | Abrahamovich A.H.,Laboratorio Of Apidologia | Abrahamovich A.H.,CONICET
Zootaxa | Year: 2011

This is the first record of the association between Walkeromya plumipes (Philippi) (Diptera: Bombyliidae) and Xylocopa Latreille (Hymenoptera: Apidae) in Argentina. The pupal development and morphology of Walkeromya plumipes, a parasitoid of Xylocopa splendidula Lepeletier, are described. A parasitized nest was collected from Santiago del Estero province, Argentina. The development of the bombyliid fly and large carpenter bees in the nest were observed in the laboratory for a period of 28 days. A detailed description of the fly adult and pupal stages were carried out. This is the first record of W. plumipes parasitizing X. splendidula. This is also the first complete description of this fly species, including male genitalia. With the data presented here the geographical distribution of the parasite is expanded. The results suggest a close relation between the parasitoid and its host, as the genus Walkeromya Paranov has been found parasitizing only carpenter bees of genus Xylocopa. © 2011 - Magnolia Press.

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