RESUMO
Trigona Jurine, 1807 (Hymenoptera: Apidae: Meliponini) is a Neotropical genus of stingless bees that is most diverse in the Amazon biome. The subgenus T. (Nostotrigona) was recently described and contains the taxa of the T. recursa species-group. In the present study, three new species of this subgenus are described: T. daianeae sp. nov., T. juvenili sp. nov., and T. mandaloriana sp. nov., including new records of T. permodica Almeida, 1992 for Brazil. A distribution map for T. (Nostotrigona) species are also provided.
Assuntos
Heterópteros , Himenópteros , Abelhas , Animais , Brasil , EcossistemaRESUMO
Bombus brevivillus Franklin is a Neotropical Bombus species whose colonies are disappearing from most of its native range, and little is known about its biology and reproductive habits to help conservation or breeding efforts. Unlike Bombus species from temperate climates whose colonies perish every winter, there are suggestions of perennial colonies that Neotropical Bombus species can present. In this work, we investigated the development of two B. brevivillus colonies (i.e., number of workers, gynes, males, new cocoons, and brood area) between August 2012 and March 2013. We realized that while one colony collapsed and died after the males' and gynes' production, and the reduction of numbers of adult workers, in the other, a new queen assumed the posture at this phase and reactivated the old nest. Despite the reduced number of colonies investigated, this study shows the possibility of nest reactivation in the studied species in queen supersedure events in resemblance to perennial colonies of eusocial bees like Apis species and stingless bees. Such behavior has never been directly described to B. brevivillus in previous studies and opens the possibility for further research in the existence and the extension of perennial colonies in Neotropical Bombus species due to its importance to the species conservation in the tropical environment.
Assuntos
Abelhas , Comportamento de Nidação , Animais , Abelhas/fisiologia , Reprodução , Clima Tropical , Dinâmica PopulacionalRESUMO
The Neotropical bee genus Tetragona Lepeletier Serville, 1828 is characterized among stingless bees by having a yellow pigmented maculation on body, especially on the clypeus, lower region of the paraocular area and mesosome, velvety genal area, a long and slender mesotibial spur and a glabrous propodeal triangle. The T. clavipes species-group is mainly characterized by having workers with elongated setae on T6, with about 2x the length of setae on T5 and hyaline wings. This group is composed of five species, two of which are described here as new: T. clavipes (Fabricius, 1804), T. perangulata (Cockerell, 1917), T. quadrangula (Lepeletier, 1936), T. mourei sp. nov. and T. korotaii sp. nov.). In this study, we synonymize T. dissecta Moure, 2000 and T. elongata Lepeletier Serville, 1828 under T. clavipes and we provide an identification key for the workers to the species in T. clavipes species-group.
Assuntos
Himenópteros , Animais , AbelhasRESUMO
The bee genus Nogueirapis Moure is redescribed with the addition of new characters deriving from two new species from the Amazon rainforest. Nogueirapis batistai sp. nov. and N. rosariae sp. nov. are described and included in an identification key that covers all species of the genus. Occurrence records are updated for all species.
Assuntos
Himenópteros , Animais , Abelhas , Florestas , Floresta ÚmidaRESUMO
Scaura Schwarz is a small, widely distributed Neotropical genus of stingless bees whose workers and males have the metabasitarsus as broad as or wider than the metatibia. The genus currently includes four valid species. A species complex composed of three additional species are described here as new (S. amazonica sp. n., S. aspera sp. n. and S. cearensis sp. n.). In addition to the descriptions and redescriptions of the species of Scaura, an illustrated identification key is presented, as well as updated geographical records.
Assuntos
Himenópteros , Animais , Abelhas , Geografia , MasculinoRESUMO
The taxonomic history of Trigona latitarsis Friese, 1900 and its clarification based on the observation of the types and literature data are treated in this study. The paper discusses the validity of the previously proposed lectotype, deposited in the ZMB (Berlin, Germany). Based on the type series deposited in HNHM (Budapest, Hungary) as well as the original description, a new lectotype and 15 paralectotypes from Amazon forest (São Paulo de Olivença, Amazonas) are designated. Data on the geographic distribution of Scaura latitarsis (Friese, 1900) are provided.
ResumoA história taxonômica de Trigona latitarsis Friese, 1900 é tratada nesse estudo, bem como esclarecimentos com base na observação dos tipos e em dados de literatura. É discutida a validade do lectótipo proposto anteriormente e depositado na ZMB (Berlim, Alemanha). Com base na série-tipo depositada no HNHM (Budapeste, Hungria), conforme descrição original, lectótipo e paralectótipos da floresta Amazônica (São Paulo de Olivença, Amazonas) são designados. Dados sobre a distribuição geográfica de Scaura latitarsis (Friese, 1900) são também fornecidos.