The taxonomic identity of Trigona lacteipennis Friese, 1900 and description of a new bee species of the Trigona cilipes (Fabricius, 1804) group (Hymenoptera: Apidae: Meliponini).

A critical study of type material for Trigona lacteipennis Friese, 1900 and allied species is presented along with a discussion of literature data. This work reveals that T. lacteipennis is a junior subjective synonym of Melipona paupera Provancher, 1889 (new synonymy), a species currently classified placed in the genus Frieseomelitta. Similarly, T. lehmanni Friese, 1901 and T. parastigma Cockerell, 1918 are also junior subjective synonyms of Melipona paupera (new synonymies). Morphological characters, photographic illustrations of type specimens, and data on distribution are provided for Frieseomelitta paupera. Also, we describe a new species of Trigona cilipes species group, Trigona (Aphaneuropsis) silveirai sp. nov., which is very similar to the former and had been misidentified with it.

Review of Trigona (Nostotrigona) Engel, 2021 from Brazil with description of three new species (Hymenoptera: Apidae: Meliponini).

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.