Diagnosis. Pronotal collar distinctly delimited from disc; small dark species less than 5.0 mm long; first antennal
segment shorter or equal to width of vertex; cuneal fracture shallow and narrow.
Key to species of Monalocoris (Source: Ferreira & Henry, 2011)
1 Pronotum, scutellum, and hemelytra uniformly black.............................................................M. carioca Carvalho and Gomes
- Pronotum and hemelytra brown to dark brown, with pale areas, scutellum dark brown, apical third of corium dark brown ...................................................................................................................................................M. pallidiceps (Reuter)
