Remarkable Australasian marine diversity: 18 new species in Pentaceration Just, 2009 (Crustacea, Isopoda, Paramunnidae) Author Just, Jean text Zootaxa 2011 2813 1 54 journal article 10.5281/zenodo.203856 60e82aa4-3a36-4f25-82a2-23acef2974c2 1175-5326 203856 Pentaceration epipedos sp. nov. Figure 31 Type fixation. Holotype , male, here designated. Etymology. The epithet is the Greek adjective επίπεδος ( epipedos ) meaning flat, alluding to the unusually flattened body of the species. FIGURE 31. Pentaceration epipedos sp. nov. Holotype, 3, except M , paratype, 3. a , antenna; au , antennula ; cv , head ventral view; p1 , pereopod 1; pl1–2 , pleopods 1 and 2; up , uropod. Habitus scale: 0.5 mm. Material examined. Holotype , 3, 1.72 mm , New Zealand , Campbell Plateau, Pukaki Rise, 49°25'S , 172°07'E , 330–338 m , 7 September 2000 , RV Tangaroa , stn TN0009/4, NIWA 29714. Paratype . Same data as holotype , NIWA 60504 (1 3, 1.65 mm ). Description . Body strongly dorsoventrally flattened, barely tapering from pereonite 2 towards pleon; width 0.47 length, widest between pereonites 6 and 7. Head length 0.22 width; length posterior to eyestalks 1.8 anterior length. Frontal margin middle spine length 0.85 head length; lateral spines 1.4 middle spine length, diverging at 110°; all 3 spines smooth with few short setae. Eyestalks over reaching lateral margin of pereonite 1 with approximately 10% of their length, pointing forward at 10º, slightly narrower near base, apex pointed. Pereonite 1 lateral margins rounded, with short pointed mid spine; pereonites 2 and 3 with straight, pointed lateral spines of 0.45 pereonite width, 2 pointing forward at approximately 20º, 3 pointing directly laterad; pereonites 2–3 spines diverging at 20 ° ; pereonite 4 with short, slender, pointed lateral spines; pereonite 5 lateral spines similar to pereonite 3 spines but slightly broader; pereonites 6 and 7 lateral spine broadly triangular, 6 slightly larger than 7, both with narrow translucent flange along anterior margins; pereonites 5 and 6 with long row of simple setae posterolaterally where overlapping succeeding pereonite. Pleon of equal length and width. Pleonite 1 width 1.25 distance between uropods, length approximately 0.1 width. Pleotelson proximal and lateral margins evenly merging, lateral margins evenly rounded, with approximately12–14 denticles (both sides somewhat damaged); distal projection triangular at 80°, 0.3 length of entire pleotelson, apex bluntly pointed. Antennula articles 1 and 2 combined reaching to apex of eyestalks; article 1 1.4 length of 2, tubular; 3 and 4 of subequal length, both 0.6 length of 5 which is 0.85 length of 6. Antenna article 2 in ventral view approximately 6 times length of 1; 3 width 0.35 length. Pereopod I basis length 2.9 width; ischium 0.65 length of basis; merus with 2 acute spines on anterior margin; carpus oval, distal margin straight; propodus narrowing distally to insertion of dactylus, with 2 robust setae on opposing margin. Pleopod I lateral sublobes dissimilar, proximal one bluntly triangular, partly overlapping distal one which carry row of simple setae; width 0.28 distance to midline; distal projection length 0.3 pleopod total length, forming acute angle, with bluntly pointed apices. Pleopod II protopod rounded distally; endopod article 2 (stylet) forming 80° curve. Uropods recessed into simple cuticle hood, protopod and exopod apparently absent; endopod length 3.6 width. Size. Largest male, 1.72 mm . Distribution. New Zealand , Campbell Plateau, 330– 338 m .