Leptochelia evansi Edgar, 2012, n. sp.

• Main Author: Edgar, Graham J.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Tanaidacea; Leptocheliidae; Leptochelia; Leptochelia evansi; Antarc*; Antarctica
• Online Access: https://doi.org/10.5281/zenodo.3506305; http://treatment.plazi.org/id/4D340E78FFCA905546A3FEF9FC2DFA31

Leptochelia evansi n. sp. (Figs 6–7) Material examined. Holotype. Male (NMV J62324), 3.2 mm, Seven Mile Beach, WA (29.17°S 114.89°E), 1 m depth, seagrass ( Amphibolis antarctica and A. griffithii ) washings, 3 March 1985. Paratypes. 16 males (NMV J62325), holotype location, June 1985 – June 1987. Other material . 32 males (NMV J62326), Cliff Head, WA (29.52°S 114.99°E), 1 m depth, seagrass ( Amphibolis antarctica ) washings, June 1985 – June 1987; six males (NMV J62327), Little Armstrong Bay, Rottnest Island, WA (31.99°S 115.50°E), seagrass washings, 1 m depth, 21 Jan 1996. Description. MALE. Body (Fig. 6). Observed length 1.8–4.0 mm; body slender, about ten times longer than broad; cephalothorax frontal margin straight from eye to slight rostrum, lateral margin straight-sided for about one third distance from eye, then expanded in smooth convex curve to anterio-lateral corner of pereonite-1, length about 1.2 times width and approximately one-sixth body length; eyes pear-shaped, about one-fifth length of cephalothorax. Pereon just over half total length; pereonite-1 length about one-quarter width; pereonites 2 and 3 similar, about 1.5 times length of pereonite-1, length about one-third width; pereonites 4 and 5 about 1.6 times length of pereonite-3, length about half width; pereonite-6 about 1.1 times length of pereonite-3, length about one-third width. Pleonites 1–5 similar other than declining in width posteriorly with pleonite 5 four-fifths width of pleonite-1, together one-fifth as long as body. Pleotelson about 1.2 times length of pleonite 5; posterior margin with paired long and small central setae, one or two simple setae and plumose seta posterio-laterally, one or two simple seta anterio-laterally and another near anterio-dorsal margin. Antennule (Fig. 6). Two-thirds length of body, article-1 about ten times longer than wide, with distal seta; article-2 about 44% of article-1; article-3 about 17% of article-2, articles 4-11 comprising flagellum that extends about one-quarter of total antennule length, ...