Macromckenziea giambonini Brandão 2010, SP. NOV.

• Main Author: Brandão, Simone N.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Ostracoda; Podocopida; Macrocyprididae; Macromckenziea; Macromckenziea giambonini; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.10545599; http://treatment.plazi.org/id/843D87F9FFFBEB3038D4F92F3B42F8B4

MACROMCKENZIEA GIAMBONINI SP. NOV. (FIGS 7, 11–13) Etymology: In honour of Diego Giambonini for his immense support. Material: 8 live specimens. Holotype: 1 A F (SNB 0030) (soft parts in glass slide, valves in micropalaeontological slide), EASIZ II, # 107, ZMH K-40809. Paratypes: 3 A F (SNB 0029, 0031, 0032) (valves in micropalaeontological slide, soft parts in glass slide) and 4 (A-1) (in alcohol 90%), EASIZ II, # 107, ZMH K-40810. Distribution (Fig. 7): Recent. Eastern Weddell Sea, SO, 924- 934 m. Measurements (Fig. 7): Holotype, RV L 1.56 mm, H 0.68 mm; LV L 1.54 mm, H 0.64 mm. Paratypes, A F, RV, L 1.56–1.60 mm, H 0.68–0.70 mm; (A-1) RV, L 1.34–1.38 mm, H 0.56–0.60 mm. Diagnosis: Carapace medium-sized. In lateral view, elongate; with slightly arched dorsal margin; and straight (RV) or slightly concave (LV) ventral margin; posterior margin pointed at 90°. Zone of concrescence very narrow with short, straight radial pore canals. Podomeres I of maxilla I without seta. Podomere V of female appendage V with very long mid-distal seta. Furca reduced, with two rods, each rod flexible and bearing two tiny proximal setae and one terminal, short seta. Description: Carapace medium-sized (for the genus), non-equilateral, elongate in lateral outline, narrow zone of concrescence with straight radial pore canals, calcified inner lamella narrow. Greatest height at midlength in RV and anterior to mid-length in LV. Length approximately 2.3 times maximum height. RV larger than LV. Anterior margin of both valves narrowly rounded, dorsal margin gently arched, posterior margin rounded, ending in 90° posterior angle. Ventral margin straight in RV and slightly concave in LV. Anterodorsal margin fairly straight in RV, slightly concave in LV. Antenna I robust, thick, tapering, with seven podomeres; Podomeres II and III flexibly articulated. Antenna II compact, thick-proportioned, tightly curled, with six podomeres; podomere IV short and thick. Mandible with a broad masticatory jaw armed with one dorsal, conical tooth followed by four ...