Echinoderes sp. 1
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publication ID |
https://doi.org/10.1016/j.jcz.2024.10.016 |
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persistent identifier |
https://treatment.plazi.org/id/03E487B5-FFE3-A943-C500-FD26FC202BCA |
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treatment provided by |
Felipe |
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scientific name |
Echinoderes sp. 1 |
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Echinoderes sp. 1 ( Fig. 7 View Fig and Table 4)
Material examined: two males, collected in 2019/12/19 at South Orkney Trench, Southern Ocean : Station A 5200; Coordinates 60 ◦ 52′ 30.000″ S, 41 ◦ 36′ 2.400″ W; at 5.251 m depth; mounted in DMHF, deposited at NHMD under catalogue number: NHMD-1790788 and NHMD-1790789 GoogleMaps .
3.2.2. Brief description
Echinoderes with middorsal spines present on segments 4, 6 and 8, and spines in lateroventral positions on segments 6 to 9. Tubes in midlateral and ventrolateral positions on segment 2, lateroventral ones on segment 5, lateral accessory on segment 8, and laterodorsal on segments 9 and 10. Midlateral tubes on segment 7 to be confirmed.
Adults with head, neck and eleven segments. Overview of measures and dimensions are given in Table 4.
Segments 1 and 2 as complete cuticular rings ( Fig. 7 A–C View Fig ). Segment 1 with a single middorsal glandular cell outlet type 1 and a pair in lateroventral positions, sensory spots in subdorsal and laterodorsal positions ( Fig. 7 A–C View Fig ). Sensory spots on this and following segments are very small, visible as a single dot or two dots in LM observations. Segment 2 with midlateral and ventrolateral tubes ( Fig. 7 B–D View Fig ), a single middorsal and a pair of ventromedial glandular cell outlets type 1, plus ventromedial sensory spots ( Fig. 7 C View Fig ). Segment 3 with subdorsal sensory spots ( Fig. 7 A View Fig ), a single middorsal glandular cell outlet type 1 and a pair in ventromedial positions. Segment 4 with acicular middorsal spine ( Fig. 7 A–E View Fig ), paradorsal and ventromedial glandular cell outlets types 1, present on this and following six segments. Segment 5 with lateroventral tubes ( Fig. 7 F View Fig ). Segment 6 with acicular middorsal and lateroventral spines, plus sensory spots in paradorsal and ventromedial positions ( Fig. 7 E–F View Fig ). Segment 7 with lateroventral spines ( Fig. 7 F–H View Fig ), and likely midlateral tubes in one specimen ( Fig. 7 H View Fig ). Segment 8 with acicular middorsal and lateroventral spines, lateral accessory tubes ( Fig. 7 E–H View Fig ), and paradorsal sensory spots. Segment 9 with lateroventral spines, laterodorsal tubes, and sensory spots in subdorsal, laterodorsal and ventrolateral positions ( Fig. 7 E–G, I View Fig ). Rounded, small sieve plates in lateral accessory positions. Segment 10 with laterodorsal tubes, two middorsal glandular cell outlet type 1 and a pair in ventromedial positions, plus sensory spots in subdorsal and ventrolateral positions ( Fig. 7 G–I View Fig ). Posterior edge of segments 1 to 10 with primary pectinate fringe. Segment 11 with long lateral terminal spines, three pairs of penile spines, sensory spots in subdorsal positions and two glandular cell outlets type 1 located middorsal. Tergal extensions short and pointed ( Fig. 7 J View Fig ). The posterior margins of the sternal plates rounded, shorter than tergal extensions.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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