Natatolana nukumbutho Bruce &amp; Olesen 1995
Creators: name: Keable, Stephen J.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Cirolanidae
Natatolana
Natatolana nukumbutho

description: <i>Natatolana nukumbutho</i> Bruce &amp; Olesen, 1995 <i>Natatolana nukumbutho</i> Bruce &amp; Olesen, 1995: 212, figs. 1–4. <b>Type material</b>. Holotype: 3, 12.3 mm, ZMUC CRU580 (not examined). Paratypes: 3, 13.2 mm, ZMUC CRU581; 9, ZMUC CRU582 (Bruce &amp; Olesen (1995) list 13 specimens: 233 and 11♀♀) (not examined); 3, AM P43423, (Bruce &amp; Olesen (1995) list one male and one female) (examined). Type locality: off Lauthala Bay, Suva, Fiji, 18°13'S 178°29'E, [baited trap], 470 m, [Institute of Marine Research, University of the South Pacific, 23 Jan. 1981]. <b>Diagnosis</b>. <i>Eyes</i>: well developed; elongate, length c. 2× height. <i>Interocular furrow</i>: well developed, extending across the cephalon. <i>Frontal lamina</i>: lateral margins medially constricted. <i>Antenna</i>: c. 0.4–0.43× as long as body, reaching to between the posterior of pereonite 3 and three quarters of the way along pereonite 4. <i>Coxal plates</i>: furrows strongly developed, on all coxae. <i>Pleonite 4</i>: apex forming a broad acute point. <i>Pleotelson</i>: broad, length 0.89× basal width; anterodorsal depression absent; anterolateral margins convex; posterolateral margins straight, markedly angled to anterolateral margins and meeting at an acute angle; apex not produced, lateral margins converging smoothly to a point; with 10–12 RS. <i>Pereopod 2</i>: propodus with 2 RS on palm. <i>Pereopod 3</i>: propodus with 2 RS on palm. <i>Pereopod 7</i>: basis of medium breadth, width 0.5× length; distance between anterior margin and medial carina less than between posterior margin and medial carina; posterior margin with setae completely absent along entire length. <i>Penes</i>: absent, vasa deferentia opening flush to surface of sternite 7 (Bruce &amp; Olesen (1995) were unable to discern the openings of the vas deferentia as the internal structure of the specimens appeared somewhat decomposed but distinct penes are absent). <i>Pleopod 2 appendix masculina</i>: much shorter than endopod, 0.7–0.87× length of endopod; margins straight; slender; apex not at angle to adjacent margins, bluntly rounded. <i>Uropods</i>: exopod slightly shorter than endopod, 0.86× the length of the endopod. <b>Variation</b>. The illustration of pereopod 7, provided by Bruce &amp; Olesen (1995), indicates the setae on the anterior margin of the ischium are plumose. Examination of paratype specimens (AM P43423), however, indicates that these setae are slender, without setules. Bruce &amp; Olesen (1995) stated that pleonite 3 does not extend posteriorly beyond the posterior margin of pleonite 5. In the paratype material examined here, however, the posterodistal margin of pleonite 3 does extend beyond the posterior margin of pleonite 5. <b>Size</b>. Males 11.2 to 13.4 mm, non-ovigerous females 12.2 to 17 mm. <b>Remarks</b>. <i>Natatolana nukumbutho</i> is very similar to <i>N. carlenae</i> but differs in having complete coxal furrows on all coxae, a slightly narrower basis on pereopod 7 and slightly narrower posterolateral margins on pleonite 4. <b>Distribution and ecology</b>. Fiji at a depth of 470 m. Scavenger.
description: Published as part of <i>Keable, Stephen J., 2006, Taxonomic Revision of Natatolana (Crustacea: Isopoda: Cirolanidae), pp. 133-244 in Records of the Australian Museum 58 (2)</i> on pages 208-209, DOI: 10.3853/j.0067-1975.58.2006.1469, http://zenodo.org/record/4685692