Austronanus aucklandensis Just & Wilson, 2006, sp. nov.

• Main Authors: Just, Jean, Wilson, George D. F.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Paramunnidae; Austronanus; Austronanus aucklandensis; Auckland Island
• Online Access: https://doi.org/10.5281/zenodo.6254983; http://treatment.plazi.org/id/463E79384742FFB92E4DFA9AFEF9FB63

Austronanus aucklandensis sp. nov. (Figs 6–7) Etymology. The species is named for Auckland Island south of New Zealand. Material examined Holotype . Ovigerous Ψ, 1.14 mm, Auckland Island, New Zealand, Ranui Cove, 166°17'E 50°32.5'S, 7 February 1973, Macrocystis pyrifera holdfasts and red algae on anchor of “Acheron”, J.K. Lowry, stn SA­1485, NIWA 18949. Paratypes. Same data as holotype, AM P70534 (ɗB, 0.77 mm), AM P70535 (8 specimens). Description. Body width 0.42 length in female, 0.43 length in male, widest in female at pereonite 2 or 3, widest in male at pereonite 2. Head length 0.74 and 0.79 width (ɗ, Ψ); length posterior to eyestalks 1.1 anterior length in female and male. Frontal margin lobe length 0.29–0.31 head length (Ψ, ɗ); apex bluntly angular in dorsal view. Eyestalks lateral apex somewhat flattened, long axis angling forward at approximately 30° in female, 10° in male. Pereonite lateral margin 1–4 linear, 5–7 rounded. Pereonite 5 in dorsal view distinctly narrower than pereonites 4 and 6. Pleon length 0.94–0.95 width. Pleotelson proximal margin length shorter than lateral margin length. Pleonite 1 width 1.0 distance between uropods; length 0.17 width. Pleotelson proximal margin in dorsal view forming 60° angle with medial axis of pleon; lateral margins denticulate, with 10–11 denticles per side, denticles low and posteriorly directed; posterior margin in female forming 110° angle, in male forming 120° angle, posterior margin with uniformly fine denticles laterally, with 3 denticles each side. Antennula with 5 articles, 1 and 2 combined shorter than eyestalk; article 1 longer and broader than 2, inflated, article 5 longer than articles 3 and 4 combined. Antenna article 2 lateral margin with two spines; article 3 in ventral view distally expanded, lateral distal margin angular, width 0.56 length, with 1 spine distally, fine cuticular combs on ventral side; article 5 only slightly longer than article 4; flagellum with 7 articles, proximal article subequal to more distal articles. Pereopod I basis with ...