Hymenodora frontalis Rathbun, 1902

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 43-44

Hymenodora frontalis Rathbun, 1902

( Fig. 10G)

Hymenodora frontalis Rathbun, 1902a: 904 ; 1904: 28, fig. 8. — Schmitt 1921: 34, fig. 20. — Kobyakova 1937: 98, fig. 2. — Goodwin 1952: 394. — Ebeling et al. 1969: 12. — Kozloff 1974: 163. — Butler 1980: 70. — Krygier & Pearcy 1981: 83. — Chace 1986: 42, figs. 21 f–j. — Hendrickx & Estrada-Navarrete 1989: 115. — Wicksten 2002: 136.

Diagnosis. Exoskeleton thin, not pitted. Rostrum shorter than scaphocerite, with 3–6 dorsal, no ventral teeth, acute apex. Carapace with suborbital, antennal teeth fused into lobe, moderate branchiostegal tooth merging into carina which extends nearly to posterior margin of carapace, orbital carina running obliquely posteriorly to v-shaped notch, then running horizontally toward posterior margin. Eye without pigment or pale amber. Stylocerite shorter than eye. Scaphocerite with lateral tooth longer than blade. Third maxilliped with proximal segment somewhat concave, setose; longer than first pereopod. Exopods of third maxilliped, pereopods about same length. Pereopods 1, 2 chelate, short. Pereopods 3, 4 with simple dactyls, spinules on merus, ischium. Pereopod 5 shorter than fourth, with very short dactyl. Abdominal somites rounded, no lateral or dorsal teeth. Telson longer than uropods, with 6–9 pairs posterolateral spines, 6 distal spines near apex, truncate distally. Male total length 58 mm, female 53 mm.

Color in life. Orange-red.

Habitat and depth. Pelagic, 200–2400 m, maximum abundance at 600–1300 m. Very common in its depth range.

Range. Sea of Okhotsk and Bering Sea to southern California. Type locality west of Unalaska , Aleutian Is..