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FIGURE 6. Nannoniscus oblongus Sars, 1870 in A review of taxonomic concepts in the Nannoniscidae (Isopoda, Asellota), with a key to the genera and a description of Nannoniscus oblongus Sars

FIGURE 6. Nannoniscus oblongus Sars, 1870 (Hjeltefjord Norway, AM P.74561), adult female. A–B, pereonite 7 and pleotelson, lateral and ventral views respectively. C, right uropod, enlargement. D, left antennula, dorsal view. Scale bars: A, B, 0.5mm, C–D, 0.1 mm.

FIGURE 5. Nannoniscus oblongus Sars, 1870 in A review of taxonomic concepts in the Nannoniscidae (Isopoda, Asellota), with a key to the genera and a description of Nannoniscus oblongus Sars

FIGURE 5. Nannoniscus oblongus Sars, 1870 (slide ex Sars Collection, Zoological Museum of Oslo). A–D, mouthparts from ZMO F10108. A, left mandible, dorsal view, arrow indicates dorsal tooth of incisor process. B, paragnaths, ventral view. C, right mandible, dorsal view. D, maxillula, ventral view. E, maxilliped, ventral view. Scale bars 0.1 mm (upper for A–C, lower for D–E).

FIGURE 4. Nannoniscus oblongus Sars, 1870 in A review of taxonomic concepts in the Nannoniscidae (Isopoda, Asellota), with a key to the genera and a description of Nannoniscus oblongus Sars

FIGURE 4. Nannoniscus oblongus Sars, 1870 (slides ex Sars Collection, Zoological Museum of Oslo). A–D, female, ZMO F10107. A, dorsal view. B–C, antenna and antennula, dorsal view. D, pereonite 7 and pleotelson, ventral view. E, pereopod, ZMO F10108. Scale bars: A, D, 0.5 mm; E, 0.1 mm.

FIGURE 3. Nannoniscus oblongus Sars, 1870 in A review of taxonomic concepts in the Nannoniscidae (Isopoda, Asellota), with a key to the genera and a description of Nannoniscus oblongus Sars

FIGURE 3. Nannoniscus oblongus Sars, 1870 (Hjeltefjord Norway, AM P.74562), adult male. A, pereonite 7 and pleotelson, ventral view. B, pleopod I, ventral view; dotted lines indicate medial sperm tube. C–D, pleopod II, ventral and dorsal views respectively; dotted lines in endopodal stylet indicate sperm tube. Scale bar 0.1 mm.

FIGURE 1 in A review of taxonomic concepts in the Nannoniscidae (Isopoda, Asellota), with a key to the genera and a description of Nannoniscus oblongus Sars

FIGURE 1. Left mandibles, dorsal and medial view respectively; arrowheads indicate position of dorsal tooth. A–B, Nannonisconus intermedius Siebenaller & Hessler, 1981 (WHOI 295, AM P.74558). C–D, Exiliniscus clipeatus Siebenaller & Hessler, 1981) (WHOI 85, AM P.74560). Scale bar 0.1 mm.

FIGURE 7 in A review of taxonomic concepts in the Nannoniscidae (Isopoda, Asellota), with a key to the genera and a description of Nannoniscus oblongus Sars

FIGURE 7. Rapaniscus dewdneyi Siebenaller and Hessler, 1981, Male, AM P.74555, WHOI 209 (type locality). A, left, pereopod I. B, right pereopod II, arrow indicates small triangular plate. Scales bar, 0.1 mm.

FIGURE 2. Nannoniscus oblongus Sars, 1870 in A review of taxonomic concepts in the Nannoniscidae (Isopoda, Asellota), with a key to the genera and a description of Nannoniscus oblongus Sars

FIGURE 2. Nannoniscus oblongus Sars, 1870 (Hjeltefjord Norway, AM P.74562), adult male, all parts drawn in situ. A– B, body, dorsal and lateral view. C, left antennula, dorsal view. D, right pereopod I. E, right pereopod VII. Scale bars: A– B, 0.5 mm, C–E, 0.1 mm.

Table 3 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Table 3. Checklist of described Nannoniscus species with information on their type locality and depth distribution<table><tbody><tr><th>Species</th><th>Type locality</th><th>Depth (m)</th></tr></tbody><tbody><tr><th>N. acanthurus Birstein, 1963</th><td>NW Pacific</td><td>3941–5495</td></tr><tr><th>N. aequiremus Hansen, 1916</th><td>S of Jan Mayen, Arctic Ocean</td><td>885</td></tr><tr><th>N. affinis Hansen, 1916</th><td>SW Iceland, N Atlantic</td><td>1505</td></tr><tr><th>N. analis Hansen, 1916</th><td>Davis Strait, Labrador Sea</td><td>2258</td></tr><tr><th>N. antennaspinis Brandt, 2002</th><td>Angola Basin, SE Atlantic</td><td>5389–5415</td></tr><tr><th>N. arcticus Hansen, 1916</th><td>S of Jan Mayen, Arctic Ocean</td><td>75–699</td></tr><tr><th>N. arctoabyssalis Just, 1980</th><td>Eurasian Basin, Arctic Ocean</td><td>3970</td></tr><tr><th>N. australis Vanhöffen, 1914</th><td>E Antarctic</td><td>385</td></tr><tr><th>N. bidens Vanhöffen, 1914</th><td>E Antarctic</td><td>385</td></tr><tr><th>N. bidens sensu Brandt, 1992</th><td>Weddell Sea</td><td>191–257</td></tr><tr><th>N. brenkei Kaiser, Brix & Jennings</th><td>Eastern German licence area, CCZ</td><td>4093–4136</td></tr><tr><th>N. camayae Menzies, 1962</th><td>Caribbean Panama</td><td>1714</td></tr><tr><th>N. caspius Sars, 1899</th><td>Caspian Sea</td><td>n.a.</td></tr><tr><th>N. cristatus Mezhov, 1986</th><td>Gulf of Alaska, NE Pacific</td><td>3200</td></tr><tr><th>N. detrimentus Menzies & George, 1972</th><td>Peru-Chile-Trench, SE Pacific</td><td>3909–3970</td></tr><tr><th>N. hilario Kaiser & Kihara</th><td>Eastern German licence area, CCZ</td><td>4093–4259</td></tr><tr><th>N. inermis Hansen, 1916</th><td>Davis Strait, Labrador Sea</td><td>2258</td></tr><tr><th>N. laevis Menzies, 1962</th><td>SE Atlantic</td><td>4885</td></tr><tr><th>N. laticeps Hansen, 1916</th><td>N Iceland</td><td>552</td></tr><tr><th>N. magdae Kaiser, Brix & Jennings</th><td>French licence area, CCZ</td><td>5017–5024</td></tr><tr><th>N. menoti Kaiser, Janssen & Mohrbeck</th><td>French licence area, CCZ</td><td>4076–5024</td></tr><tr><th>N. menziesi Mezhov, 1986</th><td>Gulf of Alaska, USA</td><td>4800</td></tr><tr><th>N. meteori (Brandt, 2002)</th><td>Angola Basin, SE Atlantic</td><td>5389</td></tr><tr><th>N. minutus Hansen 1916</th><td>Davis Strait, Labrador Sea</td><td>1096</td></tr><tr><th>N. muscarius Menzies & George, 1972</th><td>Peru-Chile-Trench, SE Pacific</td><td>3909–3970</td></tr><tr><th>N. oblongus Sars, 1870</th><td>Lofoten, Iceland</td><td>219–5843</td></tr><tr><th>N. ovatus Menzies & George, 1972</th><td>Peru-Chile-Trench, SE Pacific</td><td>6321–6328</td></tr><tr><th>N. pedro Kaiser, Brix & Kihara</th><td>GSR licence area, CCZ</td><td>4093–5024</td></tr><tr><th>N. perunis Menzies & George, 1972</th><td>Peru-Chile-Trench, SE Pacific</td><td>4823–6281</td></tr><tr><th>N. plebejus Hansen, 1916</th><td>SW Iceland, N Atlantic</td><td>1505</td></tr><tr><th>N. profundus Svavarsson, 1982</th><td>Norwegian See, off Greenland</td><td>2475–2502</td></tr><tr><th>N. reticulatus Hansen, 1916</th><td>N Iceland</td><td>80–1020</td></tr><tr><th>N. simplex Hansen, 1916</th><td>W Iceland</td><td>1070–1505</td></tr><tr><th>N. spinicornis Hansen, 1916</th><td>S of Jan Mayen, Arctic Ocean</td><td>2465</td></tr><tr><th>N. teres Siebenaller & Hessler, 1981</th><td>NE Atlantic</td><td>4426–4435</td></tr></tbody></table>

Figure 23 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 23. Nannoniscus brenkei, (A) holotype female (ZMH K-55370, NB12_Iso070), (B–I) paratype female (ZMH K-55369, Na03): (A) habitus, dorsal view; (B) AI, AII peduncular articles 1–4; (C) lMd, details: incisor, lacinia mobilis and spine row; (D) rMd, details: Md palp, spine row spines 1–4; (E) Mxp; (F) PI; (G) Op; (H) PlpIII; (I) Urp. Scale bars: A = 200 µm; B–I = 100 µm.

Figure 6. Nannoniscus menziesi Mezhov, 1986 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 6. Nannoniscus menziesi Mezhov, 1986, holotype female (ZMMU 6143): (A) habitus, posterior somited, dorsal view; (B) AII; (C) AI; (D) rMd; (E) lMd; (F) Op; (G) Urp; (H) PI. Scale bars: A–H = 100 µm.

Figure 19 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 19. Nannoniscus menoti, paratype male (ZMH K-55350, MA14_Iso272). Confocal laser scanning microscopy images: (A) habitus, dorsal view; (B) habitus, ventral view; (C) habitus, lateral view; (D) mouthparts, ventral view; (E) cephalothorax, lateral view; (F) Plt, ventral view. Scale bars: A–C = 250 µm; D–F = 100 µm.

Figure 20 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 20. Nannoniscus pedro, (A–B, F) holotype female (ZMH K-55358, Na08), (C, E, G–H) paratype female (ZMH K-55361, Na04), (D, I) paratype female (ZMH K-55362, Na11): (A) habitus, dorsal view; (B) habitus, lateral view; (C) AI, AII peduncular article 1–4; (D) AII; (E) PI; (F) Plt, ventral view; (G), Op; (H) PlpIII; (I) Urp. Scale bars: A–B, F = 200 µm; C–E, G–I = 100 µm.

Figure 3 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 3. Haplotype network for COI. Sampled haplotypes are shown as solid circles with circle area proportional to the number of individuals possessing that haplotype; open circles represent unsampled haplotypes required to connect the network. The number of mutational steps between haplotypes are shown along connecting lines. The colours represent sampling locations as indicated in the legend. Species described herein are indicated with bounding boxes.

Figure 2 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 2. Bayesian phylogenetic tree of Nannoniscus lineages based on COI, with molecular species delimitations shown as black bars.

Figure 21 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 21. Nannoniscus pedro, (A–B) holotype female (ZMH K-55358, Na08), (C–I, K–L) paratype female (ZMH K-55362, Na11), (J) paratype female (ZMH K-55361, Na04): (A) habitus, dorsal view; (B) habitus, lateral view; (C) Mxp; (D) lMd; (E) rMd; (F) MxI; (G) MxII; (H-K) PII–V; (L) PVII. Scale bars: A–B = 200 µm; C–L = 100 µm.

Figure 1. a in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 1. a, the CCZ and distribution of sampling locations across five licence areas and APEI 6; (b) detail: sampling sites in the German, UK and OMS licence area; FRA: French licence area; GSR: G-TEC Sea Mineral Resources NV (Belgium); GER: German licence area; OMS: Ocean Mineral Singapore Pte. Ltd.; UK: UK Seabed Resources Ltd.

Figure 5 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 5. Bayesian reconstruction of geographic location of ancestral lineages of Nannoniscus, based on sampling area of extant lineages. Brackets above and below branches list potential locations and their 95% highest posterior distributions, respectively.

Figure 10 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 10. Nannoniscus hilario, holotype female (ZMH K-55342, Na23). Confocal laser scanning microscopy images: (A) habitus, dorsal view; (B) habitus, lateral view; (C) habitus, ventral view; (D) mouthparts, ventral view; (E) cephalothorax, lateral view; (F) Plt, ventral view. Scale bars: A–C = 200 µm; D–F = 100 µm.

Figure 17 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 17. Nannoniscus menoti, paratype male (ZMH K-55350, MA14_Iso272): (A) habitus, dorsal view; (B–E) PlpI–IV. Scale bars: A = 250 µm; B–E = 100 µm.

Figure 8 in Species boundaries and phylogeographic patterns in new species of Nannoniscus (Janiroidea: Nannoniscidae) from the equatorial Pacific nodule province inferred from mtDNA and morphology

Figure 8. Nannoniscus hilario, (A, E, I) holotype female (ZMH K-55342, Na23); (B–D, F–H, J–K) paratype female (ZMH K-55341, NB12_Iso020): (A) habitus, dorsal view; (B) AI, peduncular articles 1–4 AII; (C) lMd; (D) rMd; (E) habitus, lateral view; (F) Mxp; (G) Op, ventral view; (H) PlpIII; (I) Plt, ventral view; (J) Urp; (K) Op, lateral view. Scale bars: A, E, I = 200 µm; B–D, F–H, J–K = 100 µm.