Paragathotanais vikingus Bird, 2010, sp. nov.

• Main Author: Bird, Graham J
• Format: Other/Unknown Material
• Language: unknown
• Published: 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Tanaidacea; Agathotanaidae; Paragathotanais; Paragathotanais vikingus; Seta; Iceland
• Online Access: https://zenodo.org/record/6205821; https://doi.org/10.5281/zenodo.6205821

Paragathotanais vikingus sp. nov. Figs 3–6 Diagnosis. Paragathotanais with cephalothorax longer than pereonites 1–2 combined; pereonites all shorter than long, with lateral crenulations; antenna article- 2 without spinules; pereopods 4–6 dactylus with two equal distal spines; uropod with slight exopod process. Material examined. Holotype: neuter (non-ovigerous female?), BIOICE Stn 2849, Iceland Basin, IMNH. 3307. Allotype: male, BIOICE Stn 3069, Iceland Basin, IMNH. 3311. Paratypes: One preparatory male, two neuters/non-ovigerous females BIOFAR Stn 264; one neuter, BIOICE Stn 2332, IMNH. 3309; one neuter, BIOICE Stn 2849, IMNH. 3307; one neuter (dissected on microslide, IMNH. 3967), one male (IMNH. 3304), BIOICE Stn 3069; two neuters, one male, BIOICE Stn 3280, IMNH. 3308; one neuter, BIOICE Stn 3539, IMNH. 3305; one neuter, BIOICE Stn 3543, IMNH. 3310; two neuters, one early preparatory male, BIOFAR Stn 264. See Appendix A for details of these stations. Description. Neuter (non-ovigerous female). Cuticle shiny. Body (Fig. 3 A) slender or fairly slender, 6.7–7.4 times as long as broad; overall length 1.63–2.20 mm (or 1.46–2.05 mm fully contracted). Cephalothorax (Fig. 4 A) elongate, 1.6–1.8 times longer than broad (mean = 1.65, n = 8) and longer than pereonites 1–2; sclerites proximal to chelipeds fused ventrally (but with faint internal suture) with narrow gap and acute anterior process. Pereonites 1– 6 0.56, 0.83, 0.83, 0.80, 0.75 and 0.53 times as long as broad respectively; pereonites 1-5 with finely crenulate lateral margins. Pleon longer than pereonite- 6; pleonite- 5 with lateral simple seta. Pleotelson (Fig. 3 B) as long as three preceding pleonites, conical in dorsal view, with deflexed acuminate process. Antennule (Fig. 3 C) 0.6 times as long as cephalothorax; article- 1 about half of total length; setation as figured. Antenna (Fig. 3 D) article- 2 larger than article- 3, both without setae or spinules; other setation as figured. Labrum (Fig. 4 B) conical, distally setose. Labium not recovered. ...