Taken primarily from Kozloff, 1987, 1996
Information on more species of this family can be found in Wicksten, 2009 page 355ff.
| 1a | Carpus of chelipeds smooth; carpus of legs 2-5 with 1 slight tubercle or crest; intertidal, mostly under rocks resting on gravel | Lophopanopeus bellus subsp. bellus |
| 1b | Carpus of chelipeds with prominent tubercles; carpus of legs 2-5 with 2 prominent tubercles or crests; subtidal in our area, in sand, mud, or gravel | Lophopanopeus bellus subsp. diegensis |