Key to species of Eupontonia

1. Carapace with supraorbital tooth................................................................ E. noctalbata

- Carapace without supraorbital tooth....................................................................... 2

2. Posteriormost tooth of dorsal rostral series distinctly postrostral; second pereopod with carpus distinctly longer than palm, unarmed............................................................................... E. gracilipes n. sp.

- Posteriormost tooth of dorsal rostral series not postrostral; second pereopod with carpus distinctly shorter than carpus, armed with small distomesial tooth......................................................................... E. oahu