Abstract
Peltidium byungwooi sp. nov. is described in morphological detail from samples collected from the macroalgal beds on rocky bottoms using a light trap from Yeoseodo Island, Korea. Our studies revealed the following morphological diagnostic characters: body strongly chitinized and dorsoventrally flattened; antennule 7-segmented; antenna with allobasis, exopod 2-segmented, bearing one and three setae, respectively; allobasis of maxilla bilobed, drawn out into a small claw with two accessory setae; endopod represented by a small protuberance bearing one seta; swimming legs P2–P4 exp-3 with two outer spines; P2 enp-1 without inner seta; P3 enp-3 with two inner setae; inner endopodal lobe of female P5 with very short outer seta (about 5.4 times shorter than inner one, 3.6 times in male); male P2 enp-3 bearing modified inner distal spine with blunt tip. Phylogenetic, zoogeographic, biological, and ecological characteristics of the family Peltidiidae are reviewed for the genus Peltidium.http://zoobank.org/urn:lsid:zoobank.org:pub:765492B8-73DF-4650-BDFA-71C73BBD7600
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