Key to Stenothoe species from Brazil

1. Gnathopod 2 dactylus inner margin with a dense row of setae.................................................. 2

- Gnathopod 2 dactylus inner margin without a dense row of setae................................................ 3

2. Gnathopod 2 (males) propodus palm with a rounded and an acute curved processes near hinge of dactylus................................................................................................... S. valida Dana, 1852

- Gnathopod 2 (males) propodus palm with two acute humps near hinge of dactylus............... S. gallensis Walker, 1904

3. Gnathopod 2 (males) propodus palm with a pronounced spine near hinge of dactylus........ Stenothoe sp. in Serejo, 1998a

- Gnathopod 2 (males) propodus palm with a trapezoid process near hinge of dactylus................... S. ogumi sp. nov.