Panopeidae, Ortmann, 1893

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 238

Family Panopeidae

Key to species of family Panopeidae

1. Eyestalk elongate. Carapace squarish, chelipeds with hands wide, compressed, with ridges on fingers. Living in muddy bays from Santa Barbara area southward................................................... Malacoplaxcaliforniensis

– Eyestalk not elongate. Carapace oval to pentagonal, chelipeds without hands wide, compressed; without ridges on fingers. Living in bays or among rocks, tide pools, may be found north of Santa Barbara...................................... 2

2. Fingers of chelae with white apices or white throughout their length. Carpal joints of walking legs not bilobed............ 3

– Fingers of chelae with black or brown apices. Carpal joints of walking legs slightly to strongly bilobed................. 4

3. Dactyl of major chela strongly curved. Fingers of chelae light-colored throughout their length. Inroduced into bays.......................................................................................... Rhithropanopeus harrisii

– Dactyl of major chela angled downward. Fingers of chelae with proximal dark blotches. Subtidal off Anacapa I., California .............................................................................. Eurypanopeus hyperconvexus

4. No enlarged tooth present at proximal end of cutting edge of dactyl of major cheliped............ Lophopanopeus frontalis

– Enlarged tooth present at proximal end of cutting edge of dactyl of major cheliped................................. 5

5. Pereopods 2–5 with carpal, meral segments not pubescent. Carapace smooth. Carpus of chelipeds smooth or pitted, never covered with bumps................................................................ Lophopanopeus leucomanus

– Pereopods 2–5 with carpal, meral segments pubescent. Carapace pubescent. Carpus of chelipeds smooth or covered with irregular raised bumps.................................................................... Lophopanopeus bellus