North Atlantic, North Pacific
Oceanic, abyssal species. Occurs below 400 m.
Female:
Frontal spine large, straight. Spines on the back corners of the last thoracic segments long, but do not reach the middle of the genital segment. A1 more than twice longer than the length of the body. Basipodite of the Mxp without a plate. Exopodite of P1 two-segmented. Basipodite of P4 with spines
Male:
Broadcast spawners (release eggs freely into the water)
Females: 3.00-4.70 mm
Males: 3.00-3.55 mm
Opprotunistic omnivores