We describe a new plexippine genus, Tenkanagen. nov., supported by phylogenomic data from ultraconserved elements (UCEs), Sanger sequences of four genes, and morphological evidence. The type species, Tenkana manu (Caleb, Christudhas, Laltanpuii & Chitra, 2014), comb. nov. is transferred from Colopsus, as is Tenkana arkavathi (Caleb, 2022), comb. nov. The phylogenomic data places Tenkana among the plexippines near Hyllus C.L. Koch, 1846 and Telamonia Thorell, 1887, while the constrained four-gene phylogeny indicates that Tenkana is distinct from Colopsus. Additionally, we describe a new species, Tenkana jayamangalisp. nov.