Group quadrivittata

Diagnosis. The quadrivittata group differs from the adisi group by the absence of basal embolar apophysis, narrow and elongated embolus, a transversal pointed ventral tegular projection, two robust apical spines on the prolateral edge of the cymbium in males and an epigynal plate forming a characteristic heart-shaped atrium in females (Figs 9C, D, F; 10G, H, I; 11C, F).

Composition. O. quadrivittata, O. tigre sp. nov. and O. negrinho sp. nov. .