Notodelphyopsis deplanata Kim & Boxshall 2020, sp. nov.

• Main Authors: Kim, Il-Hoi, Boxshall, Geoff A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Maxillopoda; Cyclopoida; Notodelphyidae; Notodelphyopsis; Notodelphyopsis deplanata; White Island
• Online Access: https://doi.org/10.5281/zenodo.5661669; http://treatment.plazi.org/id/03C487CBEF093A6EFCEFF89FFBA1FB60

Notodelphyopsis deplanata sp. nov. (Figs. 58, 59) Type material . Holotype ♀ (dissected and mounted on a slide, MNHN-IU-2014-21233), from Ascidia ornata Monniot F. & Monniot C., 2001 (MNHN-IT-2008-1160 = MNHN P5/ASC.A/299), CRRFCRCHO 148, Caminguin I., Bohol Sea, the Philippines (9°15.38’N, 124°39.12’E), west side of White Island, offshore sand cay, depth 18 m, 19 April 1997. Etymology . The species name is from the Latin deplanat (= flattened), alluding to its flattened body form. Descriptionoffemale . Body (Fig. 58A) broad, dorsoventrally depressed. Bodylength 1.21 mm; greatest width 0.59 mm across third pedigerous somite. Prosome with parallel lateral margins; prosomites well-sclerotized, ornamented with minute setules on dorsal and lateral surfaces. Cephalosome extended posterolaterally, with strongly concave posterodorsal margin and pointed posterolateral corners. First pedigerous somite overlapped by cephalosome, not visible in dorsal view. Second and third pedigerous somites as wide as cephalosome, with well-developed epimera. Brood pouch incorporating fifthpedigerous somite, 580×580 μm, sub-circular, as long as wide and equal in width to second and third pedigerous somites. Freeurosome (Fig. 58B) very small, 4-segmented, comprising genital double-somite and 3 freeabdominal somites, narrowing distally; each somite much wider than long; anal somite much narrower than second freeabdominal somite. Caudal ramus (Fig. 58B) short, as long as wide (31×31 μm); armed with 6 setae, 4 distal and 2 subdistal. [table omitted] Rostrum (Fig. 58C) small, highly sclerotized, triangular, with angular apex. Antennule (Fig. 58D) slender and shorter than cephalosome; 9-segmented with armature formula 3, 16, 6, 4, 4, 2+aesthetasc, 2, 2+aesthetasc, and 7+aesthetasc; setae generally long; 2 setae on third segment and 1 setaon fourth segment pinnate, all other setae naked; aesthetascs thin, each confluent at basewith adjacent seta. Antenna (Fig. 58E) consisting of coxa, basis and 2-segmented endopod; coxa short and unarmed; ...