Stephenseniellus palliolatipes 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; Stephenseniellus; Stephenseniellus palliolatipes; Antarc*; Antarctica; Macquarie Island
• Online Access: https://doi.org/10.5281/zenodo.6255005; http://treatment.plazi.org/id/463E79384757FF962E4DFD4AFBC2FADA

Stephenseniellus palliolatipes sp. nov. (Figs 16–18) Etymology. The epithet is derived from the Latin palliolatus (with a hood) and pes (foot), alluding to the pleotelson hoods covering part of the uropods. Material examined Holotype . ɗ, 1.27 mm, Handspike Point, Macquarie Island, 54°30'S 158°53'E, holdfasts of Durvillea antarctica , intertidal zone, D.S. Horning and J.K. Lowry, 21 December 1977, stn MA­135, NMV J52115. Paratypes. same data as holotype: NMV J52098 (ΨB, 1.42 mm), J53234 (1 ɗ), AM P60884 (ΨC, 1 Ψ). Description. Body width 0.57 length in female, 0.50 length in male, widest in female at pereonite 3, in male at pereonite 2 or 3. Head length 0.63 and 0.72 width (Ψ, ɗ); length posterior to eyestalks 1.0 anterior length in female and male. Frontal margin lobe length 0.30 head length (ɗ, Ψ); apex broadly rounded in dorsal view. Eyestalks lateral apex broadly rounded, long axis angling forward at approximately 30° in female, 20° in male, posterolateral margin of eyestalk indented under dorsal surface of head in male. Pereonite lateral margin 1–3 linear, 4 rounded (linear in female), 5–7 angular and projecting in female, more rounded in male. Pleon length 0.84 width in female, 0.90 in male. Pleonite 1 width 1.2 distance between uropods, length 0.15 width. Pleotelson proximal margin length subequal to lateral margin length. Pleotelson laterally produced, inflection near middle of lateral margin; proximal margin in dorsal view forming 45° angle with medial axis of pleon; lateral margins denticulate, with 4–8 denticles per side, low, elongate, angled posteriorly, best expressed on lateral corners; posterior margin forming 105° angle. Antennula articles 1 and 2 combined shorter than eyestalk; article 1 longer and broader than 2, inflated; distal article 5 length subequal to articles 3 and 4 combined. Antenna article 2 lateral margin with single spine; article 3 in ventral view inflated midlength, lateral margin curved, medial margin straight, width 0.57 length, with coarse crenate flange only on distolateral ...