Rhynosteus, gen.n. e notas sobre Hoplostelis Dominique (Hymenoptera, Apoidea, Megachilidae)

Molecular phylogeny of the stingless bees (Apidae, Apinae, Meliponini) inferred from mitochondrial 16S rDNA sequences

“…Traditional groups with intercontinental composition, e.g. Plebeia sensu lato (Moure, 1951(Moure, , 1961including Neotropical and African genera) or Trigona sensu lato (Michener, 1990(Michener, , 2000including Neotropical and Oriental genera) were not recovered in our analyses, nor were sister group relationships between Neotropical and African or Oriental faunas. For comparison, the stingless bee taxa used in the present study were arranged accordingly to the hypotheses presented by Michener (1990) (Fig.…”

“…Plebeia sensu Michener includes several taxa recognized as distinct genera by other authors (e.g., Moure, 1951;Camargo and Pedro, 1992a, b). Michener (1990Michener ( , 2000 emphasized the morphological similarities of these taxa and downweighted the small number of characters used by Moure (1951) to separate the groups.…”

“…(e.g. Moure, 1951;Michener, 1990Michener, , 2000Camargo, 1996) came out together with Partamona; and (5) Melipona, a morphologically and behaviorally isolated group within Meliponini, was deeply nested within the Neotropical clade.…”

“…Michener (1990Michener ( , 2000 emphasized the morphological similarities of these taxa and downweighted the small number of characters used by Moure (1951) to separate the groups. Four of these genera were included in our analysis, Plebeia, Schwarziana, Friesella, and Scaura.…”

“…Different generic classifications have been proposed for this tribe over the past 50 years (e.g. Michener, 1944;Schwarz, 1948;Moure, 1951Moure, , 1961. The first cladistic hypothesis 74 M.A.…”