Cerviniella hitoshii Kihara & Arbizu, 2012, sp. nov.

• Main Authors: Kihara, Terue C., Arbizu, Pedro Martínez
• Format: Other/Unknown Material
• Language: unknown
• Published: 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Maxillopoda; Harpacticoida; Cerviniidae; Cerviniella; Cerviniella hitoshii; Arctic; Arctic Ocean; Laptev Sea; laptev
• Online Access: https://zenodo.org/record/5616009; https://doi.org/10.5281/zenodo.5616009

Cerviniella hitoshii sp. nov. (Figs 11 –15, 20– 21) Type locality. Arctic Ocean, Laptev Sea (78 °08.19' N, 133 ° 19.94 ' E), 796 m depth. Type material. Holotype female dissected on 16 slides (reg. no. SMF 37031) from station PS 27 #038/ 2458 - 1, multi corer 6, collected 05/09/ 1993. Undissected paratypes consist of 3 copepodites (CII, CIII and CIV with reg. nos. SMF 37032, 37033 and 37034, respectively) from station PS 27 #047/ 2465 - 1, multi corer 1–4, collected 08/09/ 1993. All material collected by the junior author during the Expedition ARCTIC’ 93, Leg ARK-IX/ 4 of RV Polarstern. Description. FEMALE. Total body length 772.0 μm. Largest width measured at posterior margin of cephalic shield: 272.0 μm. Body (Figs 11 A, 20 A–C) with no clear distinction between prosome and urosome, body somites gradually tapering posteriorly. Prosome (Figs 11 A, 20 A–C, 21 D) 4 -segmented, with first pedigerous somite incorporated into cephalothorax. Cephalothorax with anastomosing pattern near rostrum (Fig. 21 C) and along margins (Figs 11 A, 20 A–B); additional ornamentation consisting of sensilla and pores as illustrated in Figure 11 A; posterior margin smooth. Pedigerous somites with reticulation along posterior margins and ornamentation consisting of sensilla as illustrated in Figure 11 A; epimera of second and third pedigerous somites expanded posteriorly; posterior margins serrate. Gonads extending from posterior region of mouth parts until middle area of somite bearing P 2 (Fig. 21 D). Urosome (Figs 11 A, 12 A–B, 20 A–C) 5 -segmented, comprising P 5 -bearing somite, genital double-somite, 2 free abdominal somites and anal somite. Urosomites with surface ornamentation consisting of sensilla and minute spinules as illustrated in Figures 12 A–B; posterior margin serrate. Genital double-somite (Figs 11 A, 12 A–B, 20 A–B) original segmentation indicated by transverse, serrate surface ridge with reticulation and sensilla dorsally, and hook-like projections laterally (Fig. 21 B), completely fused ventrally; genital field ...