Notes on South American stingless bees of the genus Scaptotrigona (Hymenoptera: Apidae), Part III: A revised infrageneric classification and new species

Abstract

This is the third part of a series on various taxonomic matters regarding the Neotropical stingless bee genus Scaptotrigona Moure (Apinae: Meliponini). Here, an infrageneric classification is established, with Sakagamilla Moure resurrected for the tubiba group, while Scaptotrigona Moure, s.str., encompasses the postica group. A key to subgenera is presented and five new subgenera are established: Eoscaptotrigona Engel, new subgenus; Dasytrigona Engel, new subgenus; Gymnotrigona Engel, new subgenus; Baryorygma Engel, new subgenus; and Astegotrigona Engel, new subgenus. The former bipunctata species group is considered to embody two unrelated groups and species of the luteipennis group also belong among these. Six new species are described, two of which would have formerly been included in the bipunctata group, and the remainder belong to the depilis group: Scaptotrigona (Eoscaptotrigona) totobi Engel, new species, from Venezuela and Colombia; S. (Gymnotrigona) psile Engel, new species, from Venezuela; S. (Gymnotrigona) aurantipes Engel, new species, from Venezuela; S. (Gymnotrigona) nuda Engel, new species, from Bolivia; S. (Gymnotrigona) stipula Engel, new species, from Brazil; S. (Baryorygma) fimbriata Engel, new species, from Bolivia.

Overview of Stingless Bees in Brazil (Hymenoptera: Apidae: Meliponini)

“…The data presented here are in agreement with CamaRgo et al (2013) JaRamillo et al 2019;nogueiRa 2016;nogueiRa et al 2017nogueiRa et al , 2019nogueiRa et al , 2020anogueiRa et al , 2020bnogueiRa et al , 2021nogueiRa et al , 2022anogueiRa et al , 2022bguevaRa et al 2020;oliveiRa et al 2020;alvaRez et al 2021;alves et al 2021;engel 2021a, 2021bengel et al 2021;Felix & FReitas 2021;baRRos et al 2022;engel 2022a, 2022b, 2022c, 2022dFeRReiRa et al 2022;RibeiRo et al 2023).…”

“…Since PedRo (2014), 59 new species of stingless bees have been described for the Neotropical region, 16 of them with occurrence records for Brazil. The largest increase in new species was in the genus Scaptotrigona Moure, 1942, with a total of 26 described in eight years (2015)(2016)(2017)(2018)(2019)(2020)(2021)(2022), seven of which with records for Brazil (laRoCa & almeida 2015(laRoCa & almeida , 2017engel 2022a, 2022b, 2022cnogueiRa et al 2022a).…”

Melitofauna del agropaisaje de caña de azúcar en el Valle del Cauca, Colombia

“…1 (18 %) y Apis mellifera L. (17 %) fueron las especies más abundantes y más ampliamente distribuidas, ya que estuvieron presentes en cinco de los nueve sitios muestreados. (Engel, 2022).…”

Notes on South American stingless bees of the genus Scaptotrigona (Hymenoptera: Apidae), Part IV: Four new species of group B from the Andean region

“…Material reported in this part of the series is deposited in the Division of Entomology, University of Kansas Natural History Museum, Lawrence, Kansas (SEMC), and the American Museum of Natural History, New York, New York (AMNH). The outline of descriptive terminology and means by which images and metrics were taken are already summarized in the earlier parts of this series and are therefore not repeated here (refer to Engel, 2022aEngel, , 2022bEngel, , 2022c.…”

“…This is the last of four planned pieces addressing taxonomic matters in the stingless bee genus Scaptotrigona Moure (Engel, 2022a(Engel, , 2022b(Engel, , 2022c, with the express purpose of making several names available so that they may be referred to by other researchers and in other works. Herein I treat some new species of the subgenus Scaptotrigona and belonging to the postica species group in its most strict sense (sensu Engel, 2022c, or section "B" of Engel, 2022b).…”