Dimeragrion baniwa sp. nov.

(Figs. 1 a−g, 2a−c, 3a−c, 4a−c)

Examined material (13♁♁ & 3♀♀)

Holotype. ♁ (LABECO, N° 12276), BRAZIL, Amazonas, S „o Gabriel da Cachoeira, (0.017, -66.891, 81 m a.s.l.), first-order stream inside Terra Firme Forest, in lateral swamps: 29.xi.2021, C.C. Mendoza-Penagos & M. Gonçalves, leg., deposited in INPA.

Allotype. ♀ (LABECO, N° 12278), same data as holotype but: (-0.172 -66.998, 78 m a.s.l.), 14.xii.2021.

Paratypes. 1♁ (LABECO, N° 12270), same data as holotype, deposited in INPA; 2♁♁ (LABECO, N° 12264, 12269) same data as previously but: (0.069 -66.829, 88 m a.s.l.), 28.xi.2021, deposited in INPA; 1♁ (LABECO, N° 12277), same data as previously but: (0.156 -66.799, 87 m a.s.l.), 29.xi.2021, deposited in INPA; 7♁♁ (LABECO, N° 12265-12268, 12271, 12272, 12274), 1♀ (LABECO, N° 12279) same data as previously but: (-0.164 -67.007, 84 m a.s.l.), 03.xii.2021, deposited in MPEG; 2♁♁ (LABECO, N° 12273, 12275), 1♀ (LABECO, N° 122263) same data as previously but: (-0.172 -66.998, 78 m a.s.l.), 28.xi.2021, M. Gonçalves leg., deposited in LABECO .

Etymology. Named baniwa (noun in apposition) in honor to the indigenous people of the Baniwa tribe which lives in and protects the Amazon Forest, and its ancestral traditions.