Mesolia Ragonot, in Joannis & Ragonot, 1889

Mesolia currently includes 20 species distributed in all biogeographical regions of the globe (Nuss et al., 2024). In the Neotropical region species have been described only from the northern fringe, i.e., Dominican Republic (one species), Jamaica (one species), and Mexico (one species from Guerrero and one from Presidio, state unknown). The placement of the new Galápagos species in Mesolia is based on the most recent diagnosis of the genus (Bassi, 2013). However, in the species described here as new, the female has a simple corpus bursae (Fig. 51), as opposed to a bilobed corpus bursae in other species. Mesolia was recently (Léger et al., 2019) returned to tribe Ancylolomiini, which includes the Prionypterygini (syn.) of Landry (1995).