Clausia parva Kim 2014, n. sp.

• Main Author: Kim, Il-Hoi
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Hexanauplia; Cyclopoida; Clausiidae; Clausia; Clausia parva; Crassostrea gigas
• Online Access: https://doi.org/10.5281/zenodo.8132713; http://treatment.plazi.org/id/75578799FF8FB600C5D8FB6BFD78F90E

Clausia parva n. sp. (Figs. 4-6) Material examined. 15, 3 from the polychaete Hydroides ezoensis Okuda epizoic on the shell of the oyster Crassostrea gigas (Thunberg), Gangneung Port (37 46′15′′N, 128 57′08′′E), depth about 50 cm, 21 November 2012. Holotype (, NIBRIV0000286627), allotype (, NIBRIV 0000286628), and paratypes (11, NIBRIV 0000286629) have been deposited in the National Institute of Biological Resources (NIBR), Incheon, Korea. Dissected paratypes (2 retained in the collection of the author. Other material examined. 2 from washings of Hydroides ezoensis Okuda epizoic on the shell of Crassostrea gigas , Yangpo Port (35 15′54′′N, 129 31′28′′E), 31 July 2007. Female. Body (Fig. 4A) elongate, cylindrical, and relatively small. Body length of dissected paratype 1.49 mm. Prosome indistinctly segmented, but 4 prosomal somites well-defined from one another by constrictions and thin exoskeletons between them. Maximum width of prosome 278 Μm across second pedigerous somite. All prosomal somites with rounded lateral margins. Cephalothorax 275 Μm wide and as long as wide, with truncated rostral protuberance. Second to fourth pedigerous somites similar in length and width, with rudimentary dorsal tergite (Fig. 4B). Urosome slightly shorter than prosome and 6- segmented. Fifth pedigerous somite 272 Μm wide, as wide as prosomal somites. Genital somite 135 219 Μm; genital apertures locating dorsolaterally in subdistal region of somite. Abdomen distinctly narrower than preceding somites, 96 126, 87 125, 67 110, and 108 102 Μm, respectively; all abdominal somites smooth, without ornamentation. Caudal rami (Fig. 4C) small and widely separated from each other; each ramus 51 27 Μm (ratio 1.89: 1) and weakly tapering in distal half, with 6 naked setae; largest terminal seta (seta V) 250 Μm long, markedly larger than other 5 setae; outer lateral seta located at midlength of ramus. Egg sac (Fig. 4D) uniserial, containing several eggs, and longer than urosome; each egg about 200 Μm in diameter. Rostrum as anterior ...