Saurotipleona julii Bird 2015, n. sp.

• Main Author: Bird, Graham John
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Tanaidacea; Akanthophoreidae; Saurotipleona; Saurotipleona julii; Seta; Iceland
• Online Access: https://zenodo.org/record/4329685; https://doi.org/10.5281/zenodo.4329685

Saurotipleona julii n. sp. (Figures 14–16, 17C–E, 19) Akanthophoreus sp.1: Holdich and Bird 1989 Akanthophoreus sp.AM#1: Bird 2001 Chauliopleona sp.AM#1: Bird 2014: 28, fig. 11b Material examined Holotype. Non-ovigerous ♀, BIOICE Stn 3504, Iceland Basin, 62.02°N, 19.49°W, 1734 m, IINH 29997. Allotype. Preparatory ♂, BIOICE Stn 3522, IINH 29996. Paratypes. AFEN Stn: non-ov. (possibly post-ov.) ♀, 54599#1, NMS.Z.2014.169. BIOICE Stns. One non-ov. ♀, 2257, IINH 29995; one non-ov. ♀, 2337, IINH 29994; one non-ov. ♀, 2410, IINH 29993; one non-ov. ♀, 3181, IINH 29992; one non-ov. ♀, one post-ov. ♀?, 3504, IINH 29991; two non-ov. ♀♀, 3522, IINH 29990. Description Non-ovigerous female: habitus (Figure 14A) slender, eight times ltb; body length 2.84–4.16 mm. Cephalothorax 1.5 times ltb, about as long as pereonites 1–2 (excluding pereonal gap). Pereon 64% of body length, pereonites parallel-sided or with slight lateral process at pereopod attachment; pereonites 1 and 6 shortest, subequal, shorter than broad, pereonites 2–3 longest. Pleon (Figure 14B) 13% body length, as long as pereonite-6 and half of pereonite-5 combined; epimera with simple seta; sternites 1–4 with low rounded process; pleonite-5 sternal spur acuminate, slightly hamate in some specimens (Figure 14C). Pleotelson as long as two preceding pleonites, smooth, with two simple setae and two PSS on posterior margin. Antennule (Figure 14D) 0.7 times length of cephalothorax, article-1 about half total length, 2.6 times ltb; article-2 1.6 times ltb, about as long as articles 3–4 combined; setation as figured; article-3 with fine distal setules; article-4 with four or five terminal setae and aesthetasc. Antenna (Figure 14E) about 0.8 times antennule length; article-2 with inferior and superior setae, superior margin with small setules; article-4 with fusion line. Labrum (Figure 15A) typical. Mandibles (Figure 15B–C) typical, left and right incisors tricuspid, lacinia of left mandible relatively narrow; molars acuminate-palmate with six–eight terminal spines. Labium ...