A new study of a surviving syntype of Trigona meadewaldoi Cockerell, 1915, was undertaken and several widely employed names for Neotropical stingless bees recognized as junior synonyms. A lectotype is designated for Trigona meadewaldoi and the following new synonymies established: Tetragona francoi Moure, 1946, and Trigona (Frieseomelitta) freiremaiai Moure, 1963. These nomenclatural matters are here settled and the species thoroughly characterized in advance of a forthcoming phylogenetic consideration of the genus Frieseomelitta von Ihering, 1912.
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http://dx.doi.org/10.3897/zookeys.111.1345 | DOI Listing |
Genes (Basel)
January 2025
Laboratório de Citogenética de Insetos, Departamento de Biologia Geral, Universidade Federal de Viçosa, Campus Universitário, Viçosa 36570-900, Minas Gerais, Brazil.
Background/objectives: A striking feature of the karyotypes of stingless bees is the large amount of heterochromatin present in most species. Cytogenomic studies performed in some Meliponini species have suggested that evolutionary events related to the diversification and amplification of satellite DNA families in the heterochromatin may reflect the structuring of phylogenetic clades in this tribe. In this study, we performed a genomic analysis in to characterize different satDNA families in its genome.
View Article and Find Full Text PDFEcotoxicology
January 2025
Tecnológico Nacional de México, Instituto Tecnológico de Conkal, Conkal, Yucatán, Mexico.
Stingless bees are important pollinators in tropical regions, but their survival and behavior have been impacted by various factors, including exposure to insecticides. Here, we evaluated the lethal and sublethal effects of commercial formulations of two widely used insecticides, flupyradifurone (FPF formulation), and cyantraniliprole (CY formulation), on Melipona beecheii and Nannotrigona perilampoides. The study involved oral exposure of bees to insecticides, calculation of the lethal concentration (LC) and the lethal time (LT), and evaluation of walking and flight take-off activities.
View Article and Find Full Text PDFZootaxa
May 2024
Instituto Nacional de Pesquisas da Amazônia; Coordenação de Biodiversidade. Manaus; Amazonas; Brazil.
Zootaxa
September 2024
Laboratório de Biologia Comparada e Abelhas; Departamento de Biologia; Faculdade de Filosofia; Ciências e Letras de Ribeirão Preto; Universidade de São Paulo; 14040-901; Ribeirão Preto; Brazil.
The stingless bees of the genus Oxytrigona Cockerell are popularly known as "fire bees", due to their unique habit of spitting a caustic secretion when disturbed. Currently, this neotropical genus includes 11 valid species distributed from southern Brazil, throughout most of South and Central America, reaching southern Mexico. They are especially diverse in the Amazon, where five species are recorded.
View Article and Find Full Text PDFMol Phylogenet Evol
December 2024
Laboratório de Biologia Comparada e Abelhas, Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP 14040-901, Brazil.
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