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23 results for “Portaratrum”
FIGURE 11. Portaratrum birdi n in Two new species of paratanaoid tanaidaceans of the family incertae sedis (Crustacea: Peracarida) from polymetallic nodule fields in the eastern Clarion-Clipperton Fracture Zone
FIGURE 11. Portaratrum birdi n. sp. Holotype female. (A) pleonite-5 ventral spur; (B) left mandible; (C) labium spiniform setae; (D) chela inner margin with two simple setae and four rows of microtrichia; (E) pereopod-1 propodus microtrichia; (F) pereopod-1 unguis tip; (G) pereopod-4 dactylus spinulation. Scale bars: 50 µm.
FIGURE 6. Portaratrum birdi n in Two new species of paratanaoid tanaidaceans of the family incertae sedis (Crustacea: Peracarida) from polymetallic nodule fields in the eastern Clarion-Clipperton Fracture Zone
FIGURE 6. Portaratrum birdi n. sp. OMS exploratory area, Clarion-Clipperton Fracture Zone. (A, C–F) Holotype female (ZRC 2020.0162) and (B) paratype female (ZRC 2020.0163): habitus, (A) dorsal and (B) lateral views; (C) pleonite-5, pleotelson and uropod, lateral; (D) ventral spur on pleonite-5; (E) antennule; (F) antenna. Scale bars: 1 mm for (A, B); 100 µm for (C–F).
FIGURE 7. Portaratrum birdi n in Two new species of paratanaoid tanaidaceans of the family incertae sedis (Crustacea: Peracarida) from polymetallic nodule fields in the eastern Clarion-Clipperton Fracture Zone
FIGURE 7. Portaratrum birdi n. sp. Holotype female. Labrum, (A) dorsal and (A`) lateral views; (B) left and (B`) right mandibles; (C) labium; (D) maxillule; (E) maxilla; (F) maxillipeds. Scale bar: 100 µm.
FIGURE 8. Portaratrum birdi n in Two new species of paratanaoid tanaidaceans of the family incertae sedis (Crustacea: Peracarida) from polymetallic nodule fields in the eastern Clarion-Clipperton Fracture Zone
FIGURE 8. Portaratrum birdi n. sp. Holotype female. (A) Left cheliped, with setae and microtrichia on inner margin (denoted by asterisks *); (B–G) pereopods 1–6. Scale bars: 100 µm.
FIGURE 3. Portaratrum fascinatus n in Portaratrum, a new genus of deepsea Tanaidacea (Crustacea) with description of two new species
FIGURE 3. Portaratrum fascinatus n. sp., holotype ZMH K40357, nonovigerous female: a, body, dorsal view; b, body, lateral view; c, cephalothorax, ventral view. Scale bar 1 mm. Paratype ZMH K40359, nonovigerous female: d, antennula; e, antenna; f, labrum; g, mandibles; h,. maxillula; i, maxilla; j, labium; k, maxilliped; l, pleopod; m, uropod. Scale bar 0.1 mm.
FIGURE 2. Portaratrum afer n in Portaratrum, a new genus of deepsea Tanaidacea (Crustacea) with description of two new species
FIGURE 2. Portaratrum afer n.sp., paratype ZMH K40355, nonovigerous female: a, pereopod 1; b, pereopod 2; c, pereopod 3; d, pereopod 4; e, pereopod 5; f, dactylus and unguis of pereopod 5; g, pereopod 6. Scale bar 0.1 mm
FIGURE 1. Portaratrum afer n in Portaratrum, a new genus of deepsea Tanaidacea (Crustacea) with description of two new species
FIGURE 1. Portaratrum afer n. sp., holotype ZMH K40353, nonovigerous female: a, body, dorsal view; b, body, lateral view; c, cephalothorax, ventral view. Scale bar 1 mm. Paratype ZMH K 40355, nonovigerous female: d, antennula; e, antenna; f, cheliped; g, uropod; h, pleopod; i. labrum; j, mandibles; k, maxillulae; l, labium; m, maxilla; n, epignath; o, maxilliped. Scale bar 0.1 mm.
FIGURE 4. Portaratrum fascinatus n in Portaratrum, a new genus of deepsea Tanaidacea (Crustacea) with description of two new species
FIGURE 4. Portaratrum fascinatus n. sp., paratype ZMH K40359, nonovigerous female: a, cheliped, external view; b, pereopod 1; c, pereopod 2; d, pereopod 3; e, pereopod 4; f, pereopod 5; g, pereopod 6. Scale bar 0.1 mm.
Figure 13 in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 13. Patterns of community contribution and relative abundance in Leptognathioides polita: (A) regional contribution comparing species rank (y-axis species rank by abundance, standardised) to relative abundance by region (x-axis percentage contribution to total number of tanaidacean individuals); vertical and horizontal lines indicate 25% level, below which 'rarity' may be invoked; (B) distribution of individual sample frequencies; vertical bars indicate % contribution to total number of tanaidaceans in sample.
Figure 11 in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 11. Pleonal spurs of several tanaidacean species from the Atlantic Margin: (A) Akanthophoreus longiremis (Lilljeborg), BIOICE Stn 2349; (B) Chauliopleona sp.AM#1, BIOICE Stn 2257; (C) Chauliopleona amdrupi (Hansen), BIOICE Stn 3282; (D) Cryptocopoides arcticus (Hansen), BIOICE Stn 2912; (E) Insociabilitanais sp.AM#1, BIOICE Stn 2337; (F) Leptognathia breviremis agg., BIOICE Stn 2772; (G) Paranarthrurella arctophylax (Norman and Stebbing), BIOICE Stn 2860. Not to scale; pleopods omitted from (A–D) and (F, G).
Figure 10. Portaratrum holdichi n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 10. Portaratrum holdichi n. sp. Paratype non-ovigerous female (IINH 27899): (A) pleopod. Preparatory male (IINH 27903): (B) pleopod. All seta sparsely plumose as indicated. Manca-III (IINH 27903): (C) pereonite-6, pleon, and pleotelson, lateral. Scale bars: i: 0.25 mm for (A, B); ii: 0.125 mm for (C).
Figure 8. Portaratrum holdichi n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 8. Portaratrum holdichi n. sp. Paratype non-ovigerous female (IINH 27899): (A) cheliped [right]; (B) cheliped [left] palm and dactylus medial spines; (C) uropod. Preparatory male (IINH 27903): (D) antennule. Scale bar: 0.25 mm.
Figure 5. Leptognathioides biarticulata n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 5. Leptognathioides biarticulata n. sp. Paratype non-ovigerous female (IINH 27879): (A) pleopod (all setae weakly plumose); (B) uropod. Allotype preparatory male: (C) Habitus. Paratype preparatory male (IINH 27876): (D) antennule; (E) pleopod. Scale bars: i: 0.25 mm for (A, B, D, E); ii: 1 mm for (C).
Figure 4. Leptognathioides biarticulata n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 4. Leptognathioides biarticulata n. sp. Paratype non-ovigerous female (IINH 27879): (A–F) Pereopods 1–6 respectively. Scale bar: 0.25 mm.
Figure 9. Portaratrum holdichi n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 9. Portaratrum holdichi n. sp. Paratype non-ovigerous female (IINH 27899): (A–F) pereopods 1–6 respectively. Scale bar: 0.25 mm.
Figure 7. Portaratrum holdichi n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 7. Portaratrum holdichi n. sp. Paratype non-ovigerous female (IINH 27899): (A) antennule; (B) antenna; (C) labrum; (D–F) left mandible with enlargements of incisor and molar, respectively; (G, H) right mandible and enlargement of molar, respectively; (J) labium; (K) maxillule; (L) maxilla; (M) maxilliped (terminal setae of article-4 omitted for one palp); (N) maxilliped endites inner view. Scale bar: 0.25 mm for (A–E, G, J–N), 0.125 mm for (E, F, H).
Figure 3. Leptognathioides biarticulata n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 3. Leptognathioides biarticulata n. sp. Paratype non-ovigerous female (IINH 27879): (A) labrum, lateral; (B, C) left and right mandibles respectively; (D) maxillule endite; (E) maxilliped (one palp omitted); (F) epignath; (G) cheliped; (H) cheliped palm and dactylus medial setation. Scale bars: i: 0.25 mm for (A–F); ii: 0. 25 mm for (G, H).
Figure 6. Portaratrum holdichi n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 6. Portaratrum holdichi n. sp. Holotype ovigerous female: (A) habitus; (B) pleon, lateral view (pleopods omitted); (C) pleotelson apex. Paratype non-ovigerous female (IINH 27899): (D) Cephalothorax, lateral; (E) cephalothorax, ventral. Allotype preparatory male: (F) Habitus (antennules somewhat down-curved); (G) pleon, lateral. Scale bars: i: 1 mm for (A, B, F, G), 0.5 mm for (C); ii: 0.5 mm for (D, E).
Figure 2. Leptognathioides biarticulata n in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 2. Leptognathioides biarticulata n. sp. Holotype non-ovigerous female: (A) habitus; (B–C) cephalothorax-cheliped, lateral and ventral respectively; (D) pleon, lateral (pleopods omitted); (E) pleotelson. Paratype non-ovigerous female (IINH 27879): (F) antennule; (G) antenna. Scale bars: i: 1 mm for (A), 0.5 mm for (D, E); ii: 0.5 mm for (B, C); iii: 0.25 mm for (F, G).
Figure 1 in Tanaidacea (Crustacea: Peracarida) of the North-east Atlantic: the genera Leptognathioides and Portaratrum of the 'Atlantic Margin'
Figure 1. Leptognathioides polita. Female (BIOICE Stn 2673): (A) Maxilliped; (B) maxilla. Preparatory male (BIOICE Stn 2673): (C) habitus; (D) pleopod (all setae plumose); (E) uropod, lateral. Scale bar: 2 mm for (C), 0.25 mm for (A, B, D, E).
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