Bipolar species; Antarctic (S. Sandwich Islands, Pacific Ocean), Spitsbergen, Arctic Basin, Kuril Islands
Oceanic, bathy- to abyssopelagic species.
Female: Posterior corners of the last thoracic segment reach the middle of the genital segment, and end with small conical bumps. Abdomen is 3.8 times shorter than the cephalothorax. A1 is almost as long as the body.Genital segment is symmetrical. P1-P4 are typical for genus. Coxopodite of P4 with 10-12 spines.
Male: Abdomen is 3.2 times shorter than the cephalothorax. Posterior corners of the last thoracic segment lack spines. A1 reach the fourth abdominal segment. The distal part of the second segment of the exopodite of P5 is sabre-shaped.
