Key to the genera of the Stenetriidae
1 Eyes reniform, with ommatidia arranged in kidney shape, or eyes absent.... 2
– Eyes with ommatidia in roughly circular group........... 5
2 Pereopod 1 in male, carpus produced into posterodistal lobe....................... Hansenium Serov and Wilson, 1995
– Pereopod 1 in male, carpus not produced............ 3
3 Pereopod 1 in male, propodus usually longer than width of palm...... 4
– Pereopod 1 in male, propodus usually as long as width of palm....................... Tenupedunculus Schultz, 1982
4 Pleopod 1 in male, lateral margin angular... Lexcenium Serov and Wilson, 1999
– Pleopod 1 in male, lateral margin evenly convex... Stenetrium Haswell, 1881
5 Eyes consisting of three to Žve ommatidia............ 6
– Eyes consisting of eight or more ommatidia............ 8
6 Rostrum triangular.................. 7
– Rostrum short, anterior margin convex.... Liocoryphe Serov and Wilson, 1995
7 Rostrum narrowly triangular; pereopod 1 in male, propodus about twice longer than palm width................. Stenobermuda Schultz, 1979
– Rostrum broad-based, distally narrowed; pereopod 1 in male, propodus slightly longer than palm............ Tristenium Serov and Wilson, 1995
8 Rostrum poorly deŽned or absent..... Mizothenar Serov and Wilson, 1995
– Rostrum large, triangular or linguiform...... Protallocoxa Schultz, 1978