Structures of Eucampesmella, adult female of E. macunaima sp. nov.: (19) 3rd body ring; (20) detail of epigyne; right vulva: (21) ventral view; (22) lateral view; (23) detail of the operculum; (24) detail of the setae on the external valve. Scale bars: 19 = 2 mm; 20–22 = 1 mm; 23 = 400 µm; 24 = 200 µm.