Pseudomma bellingshausensis Vicente, 2011, n. sp.

• Main Author: Vicente, Carlos San
• Format: Other/Unknown Material
• Language: unknown
• Published: 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Mysida; Mysidae; Pseudomma; Pseudomma bellingshausensis; Bellingshausen Sea
• Online Access: https://zenodo.org/record/6192848; https://doi.org/10.5281/zenodo.6192848

Pseudomma bellingshausensis n. sp. (Figs. 1–3) Type locality Station 34 TA, Bellingshausen Sea, 70 º06’ 24 ”S – 84 º 52 ’ 14 ”W, 612 m depth, 10–50 cm water layer above bottom, sediment with a low organic matter content (1.8 %) and a high percentage of fine sand (59.9 %), 31 January 2006. Material examined. Holotype (ICMM / 2010 / 10 /001). Mature male (11.2 mm TL). Paratypes (ICMM / 2010 / 10 /002). Mature female (10.0 mm TL), 4 mature females (3.2 mm CL, 3.5 mm CL, 3.0 mm CL, 3.0 mm CL), 2 mature males (3.5 mm CL, 3.5 mm CL), 11 immature females (9.4 mm TL, 8.1 mm TL, 7.8 mm TL, 3.0 mm CL, 2.9 mm CL, 2.8 mm CL, 2.7 mm CL, 2.7 mm CL, 2.5 mm CL, 2.5 mm CL, 2.2 mm CL), 3 immature males (10.3 mm TL, 9.4 mm CL, 2.6 mm CL) and 13 juveniles (5.5 mm TL, 2.2 mm CL, 2.0 mm CL, 1.8 mm CL, 1.8 mm CL, 1.8 mm CL, 1.7 mm CL 1.7 mm CL, 1.7 mm CL, 1.7 mm CL, 1.6 mm CL, 1.5 mm CL, 1.5 mm CL). Station 34 TB, same locality, 55–95 cm water layer above bottom: 1 mature male (3.0 mm CL), 1 mature female (2.8 mm CL) and 1 immature male (2.8 mm CL). Station 34 TC, same locality, 100–140 cm water layer above bottom: 2 immature females (3.1 mm CL, 3.0 mm CL) and 3 juveniles (7.4 mm TL, 4.4 mm TL, 2.2 mm CL). Diagnosis. Antero-lateral margins of ocular plates serrated with 22 conspicuous serrations. Posterior part of telson armed with eight pairs of spiniform setae that increase in size distally. Description. The morphological characteristics refer to both sexes, unless otherwise stated. Carapace with anterior margin evenly rounded and anteriorly produced lateral corners; posterior margin emarginated dorsally, leaving last thoracic somite partially uncovered; posterolateral lobe covering anterior half of abdominal somite. Ocular plate extending to mid-portion of first segment of antennular peduncle; plate with well-marked median anterior cleft; antero-lateral margins serrated with 22 serrations (Fig. 1 A). Antennular peduncle half as long as antennal scale. First article wider than long, without ventral carina, outer distal corner armed ...