Key to species of Dardanus from Brazil

1. Left cheliped with granular striations and fringe-shaped bristles...................................... D. insignis

- Left cheliped with tubercles surrounded by short bristles................................................... 2

2. Ventral face of the dactyl of second left ambulatory leg with shallow longitudinal groove................... D. fucosus

- Ventral face of the dactyl of second left ambulatory leg without longitudinal groove...................... D. venosus