Caribbean Amphipoda (Crustacea) of Panama. Part III: parvorder Lysianassidira Author White, Kristine N. 0000-0002-5203-1656 Aquatic Sciences Center, Department of Biological and Environmental Sciences, Georgia College & State University, Milledgeville, GA 31061, USA text ZooKeys 2024 2024-10-24 1216 149 171 journal article 10.3897/zookeys.1216.135258 67B6C273-62C5-4F89-AE63-316B73D65D55 Genus Aruga Holmes, 1908 Diagnosis. Antenna 1 with strong callynophore in male and female. Antenna 2 flagellum elongate in male. Epistome not produced; upper lip produced. Maxilla 2 inner plate narrow. Gnathopod 1 simple. Gnathopod 2 minutely chelate. Uropod 2 inner ramus with dorsal notch, gradually narrowing distally. Uropod 3 outer ramus 2 - articulate. Telson entire.