Reference genome assemblies for the North American bumble bees Bombus flavifrons and Bombus fervidus , two phenotypically polymorphic species from distinct phylogenetic lineages. - Lozier, Jeffrey D; Schweizer, Rena M; Sim, Sheina B; Hines, Heather M; Branstetter, Michael G; Benavides, Ligia R; Geib, Scott M; Koch, Jonathan Berenguer Uhuad (G3: Genes | Genomes | Genetics, 2026)