Euglossa (Glossura)

Diversity of Euglossa (Glossura) View in CoL

Twenty-three species are now known in Euglossa (Glossura) and E. (Glossuropoda), four of them endemic in the Atlantic Forest ( Euglossa cyanochlora Moure, 1996 , Euglossa iopoecila Dressler, 1982a , Euglossa roubiki Nemésio, 2009 , and Euglossa stellfeldi Moure, 1947 sensu Nemésio 2009a ) and three of them endemic in Central America ( Euglossa asarophora Moure, 1969 , Euglossa flammea Moure, 1969 , and Euglossa nigrosignata Moure, 1969 ). The remaining sixteen species occur in northern South America, one of them ( Euglossa natesi Parra-H, Ospina- Torres & Ramírez, 2006) only recorded from the westernmost part of the continent, west to the Andes in the Chocó region of Colombia and Ecuador ( Parra-H et al. 2006: 34), thus not reaching the Amazon Forest and not treated here; two of them ( Euglossa rufipes Rasmussen & Skov, 2006 and Euglossa tiputini Roubik, 2004 ) occurring at the westernmost part of the Amazon Basin; one ( Euglossa inflata Roubik, 2004 ) only recorded from the Guianas; and twelve species have a more widespread distribution, all of them known from the Brazilian Amazon, one of the most diverse assemblages of Euglossa (Glossura) (see Table 1 View TABLE 1 ). Three of these species were only recorded in the Brazilian Amazon recently: Euglossa allosticta Moure, 1969 , formerly known only from Central America ( Roubik & Hanson 2004), was first recorded in Brazil by Nemésio & Morato (2004, 2006a, b), for the state of Acre, and subsequently was found in Roraima ( Nemésio 2005b) and Amazonas ( Dias 2007). The other two records, E. lugubris and E. occidentalis , are introduced in this study and discussed below.

Another species which deserves further attention is E. orellana Roubik, 2004 . This species was only recently described, but it is very common throughout the Amazon Basin and there has been some confusion between it and E. chalybeata Friese, 1925 . Specimens collected in the state of Amazonas and identified as E. chalybeata by Powell & Powell (1987), Becker et al. (1991), Morato et al. (1992), Morato (1994), and Oliveira & Campos (1995, 1996) may belong to this species. Nevertheless, subsequent studies confirmed that both species are sympatric in the state of Amazonas ( e.g. Dias 2007), as well as in the state of Roraima ( e.g. Oliveira et al. 2010) (see Table 1 View TABLE 1 ).

FIGURE 4. Metatibia. A: E. intersecta , B: E. inflata , C: E. rugilabris , D: E. juremae , E: E. tiputini , F: E. rufipes , G: E. viridifrons , H: E. allosticta , I: E. imperialis , J: E. lugubris , K: E. piliventris , L: E. orellana , M: E. occidentalis , N: E. chalybeata , O: E. ignita .