Neonesidea keyseri Brandão, 2008, sp. nov.

• Main Author: Brandão, Simone N.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Ostracoda; Podocopida; Bairdiidae; Neonesidea; Neonesidea keyseri; Southern Ocean; Scotia Sea; Seta
• Online Access: https://zenodo.org/record/6233656; https://doi.org/10.5281/zenodo.6233656

? Neonesidea keyseri sp. nov. (Figs. 18 –21) Etymology. In honour of Dr. Dietmar Keyser, from the University of Hamburg, for his important contributions to Ostracodology and his careful supervision during my Ph. D. thesis. Material: 2 live specimen, 2 RV, 1 LV. Holotype: 1 A F (SNB 0264), ANDEEP II, # 140 – 8 –E, ZMH K­ 41361. Paratypes: 1 (A­? 2) (SNB 0652), 2 RV, 1 LV, ANDEEP II, # 140 – 8, ZMH K­ 41362. Distribution. Eastern Scotia Sea, Southern Ocean (Atlantic Sector), 2962 to 2965 m. Measurements (Fig. 18). Holotype, LV, L 1.33mm, H 0.88mm, RV, L 1.35mm, H 0.86mm. Paratypes, LV, A L 1.32, H 0.86mm; J (A­? 2) L 0.83mm, H 0.58mm. Diagnosis. LV and RV subhexagonal, posterior angle acute, valve surface smooth, with numerous and long sensilla. LV with rounded dorsal, anterior and posterior margins, and straight ventral margin. RV with straight anterodorsal and ventral margins, and narrowly rounded anterior and posterior margins. AI with elongated podomere VII. Podomere VI of AII with 1 long, distally spatulate claw, 1 short seta, and 1 short fused seta, all simple. Vibratory plate of MxI with 2 strahlen and about 21 feathered setae; distal margin of palp of MxI with 1 cylindrical, distally feathered seta, and 1 simple seta. Vibratory plate of ApV with 3 strahlen and 10 feathered setae. Distal claw of podomere V of ApV­VII slightly spatulate. Fu with 7 setae, second longest, first also long, other 5 medium­sized. Description. LV and RV subtrapezoidal, posterior angle acute, valve surface smooth, with very numerous and long sensilla. LV with rounded dorsal, anterior and posterior margins, and straight ventral margin. RV with more angulated outline than LV, with straight anterodorsal and ventral margins. Inner lamella narrow, vestibules constricted. Radial pore canals simple and with rim. Adductor muscle scars arranged in 3 horizontal rows, dorsal row with 2 scars, middle and ventral rows with 3 scars each. In dorsal view, carapace lozengeshaped with acute anterior and posterior angles, maximum width anterior to ...