Comprehensive Description

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Based onmale holotype 2.2 mm.  Head. Head lateral lobes rounded, anterodistal margin scarcely excavate; eyes medium size. Antenna 1 a little over half length of body; peduncular articles short; article 3 about half length of article 1; accessory flagellum absent; flagellum more than two times length of peduncle, with 14 articles. Antenna 2 about two thirds length of antenna 1; peduncle short; articles 4 and 5 subequal; articles 3–5 bearing tufts of long setae on the posterior margin; flagellum with 10 articles. Mandible palp articles in the ratios (basi-distal) 2:3:3.   Pereon. Gnathopod 1 coxa anterodistal margin strongly produced, obtuse; basis short, expanded, with large anterodistal flange; propodus longer than carpus, palm evenly rounded; dactylus overlapping palm. Gnathopod 2 coxa unproduced, deeper than broad; basis robust, expanded, with strongly convex posterior margin and concave anterior margin, moderately produced anterodistal flange; carpus very reduced, cup-shaped, with strongly produced lobe between merus and posterior margin of propodus; propodus elongate, subrectangular, with strong, broad-based posterodistal spine, separated from anterior dactylar lobe by deep triangular excavation; dactylus stout, falciform, slightly overlapping posterodistal spine. Pereopods 3–4 basis elongate-ovoid; propodus without robust setae; dactylus about half length of propodus. Pereopods 5–7 with pyrifom basis. Pereopod 7 scarcely longer than pereopod 6.   Pleon. Epimeron 3 evenly rounded with minute notch bearing minute seta. Uropod 1 peduncle longer than rami, with short distoventral spine; outer ramus longer than inner, both rami lacking marginal robust setae. Uropod 2 peduncle and inner ramus subequal in length; inner ramus longer than outer with one marginal robust seta. Uropod 3 peduncle longer than rami; rami subequal, outer ramus with 2 recurved robust setae. Telson with small telsonic cusps.   Female (sexually dimorphic characters). Gnathopod 2 basis elongate weakly expanded, lacking strong anterodistal flange; carpus subtriangular.


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© Alan A. Myers

Source: ZooKeys

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