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Deep-Water Crustacea of the Genus Sergestes (Decapoda, Natantia) from Cook Strait, New Zealand

Systematic Position

Systematic Position

This New Zealand form shows all the features of the "S. arcticus group" of the subgenus Sergestes s.s.: 3rd maxillipeds subequal with 3rd pereiopods, the two distal segments of the 5th pereiopods setose on only one margin, 3rd segment of antennular peduncle shorter than 1st, processus uncifer terminally hooked. Within this group it can be fully distinguished by rostral and branchial features from the only other species described, the North Pacific S. similis. Though the petasma of S. similis is undescribed, that of our New Zealand form agrees in every detail with the highly characteristic organ of S. arcticus excellently illustrated by Hansen (1922) and others.