Ochrogramma, Gardener and Shelley, 1989

Key to species of Ochrogramma View in CoL , based on males

1. Anterior angiocoxites with prominent patch of finely branched processes on anterior side ( Fig. 20 View Figures 17–20 ); length 14–15 mm .................................................................... 2

— Anterior angiocoxites lacking patch of finely branched processes; length 11–12 mm ............... 4

2(1). Vestigial telopodite absent; ninth leg coxal process blunt, squared off ( Fig. 46 View Figures 46–49 ); tip of anterior angiocoxite not twisted ( Fig. 42–44 View Figures 42–45 ); Skamania Co., Washington ...................... O. skamania , n. sp .

— Vestigial telopodite present; ninth leg coxal process bifid or with two or three distinct divisions ( Fig. 25, 26. 35 View Figures 25–28 View Figures 29–31 View Figures 32–37 )............................................................................... 3

3(1). Ninth leg coxal process complex, with three or more divisions ( Fig. 26 View Figures 25–28 ); widely distributed from northwest Oregon to Puget sound..................................... O. bentona (Chamberlin) View in CoL .

— Ninth leg coxal process bifid ( Fig. 37 View Figures 32–37 ); northern California and southwest Oregon ............................................................................. O. haigi Gardner and Shelley View in CoL

4(1). Tip of anterior angiocoxite twisted, with broad lateral flange; southwest Oregon ........................................................................... O. formulosa Gardner and Shelley

— Tip of anterior angiocoxite not twisted, lacking lateral flange; Tillamook Co., Oregon ..................................................................... O. heterogona Gardner and Shelley View in CoL