Abstract
A new species, Aroui minusetosus sp. n., is recorded from Korean waters with detailed description and illustrations. A new key to all known Aroui is provided. The Korean material of this scopelocheirid is readily assigned to the genus Aroui by the presence of long and distally barbed setae on the outer plate of maxilla 2. This new species is distinguished from congeners by ventrally smooth coxae 1-3 and a setose posteroventral margin of coxa 4, the subchelate gnathopod 2 having a row of four robust setae on its posterior margin (including an elongate single locking seta), and the setation of all appendages which is less dense than in other species. This is the first record of scopelocheirid amphipods from Korean waters.
Highlights
The family Scopelocheiridae was established by Lowry and Stoddart (1997) based on the synapomorphy of a strongly shortened dactylus of gnathopod 1 which is covered with various distal setae from the propodus
The genus Aroui Chevreux, 1911 included in the Scopelocheirinae is characterized from other Scopelocheiridae genera by bearing unusually long and distally barbed setae on the outer plate of maxilla 2
Hitherto the Scopelocheiridae has not been recorded from Korean waters
Summary
The family Scopelocheiridae was established by Lowry and Stoddart (1997) based on the synapomorphy of a strongly shortened dactylus of gnathopod 1 which is covered with various distal setae from the propodus.
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