Neobrychiopontius galeronae, Mahatma, Radith, Arbizu, Pedro Martínez & Ivanenko, Viatcheslav N., 2008
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publication ID |
https://doi.org/ 10.5281/zenodo.183905 |
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DOI |
https://doi.org/10.5281/zenodo.5694386 |
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persistent identifier |
https://treatment.plazi.org/id/03DB1157-A81C-C301-0BB1-D5FF0E486DFA |
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treatment provided by |
Plazi |
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scientific name |
Neobrychiopontius galeronae |
| status |
sp. nov. |
Neobrychiopontius galeronae sp. nov.
Type material — Holotype Ψ ( SMF 31444) dissected and mounted on 14 slides and 2 paratype females ( SMF 31445) preserved in ethanol, locality as below. The type material is deposited in the collection of the Senckenberg Museum, Frankfurt ( SMF), Germany.
Type locality—The nodule province in the northeast Pacific Ocean, 14° 02.37N; 130° 06.93W, depth 4978 m, date 26/5/2004.
Etymology—The species is dedicated to the chief scientist of the cruise Joëlle Galéron (Ifremer, France) in recognition of her scientific achievements.
Description—Adult female ( Fig. 3 View FIGURE 3 A). Total length excluding furca 1.4 mm, greatest width 0.74 mm. Prosome 4segmented, flattened, narrowing anteriorly; epimeral areas of shield and tergites rounded. Urosome ( Fig. 3 View FIGURE 3 B) 5segmented, consisting of somite bearing leg 5, genital doublesomite and 2 abdominal somites plus telson. Genital doublesomite slightly wider than long; lateral expansions in the anterior part; gonopores located in a dorsolaterally covered by leg 6 bearing 2 small setae ( Fig. 3 View FIGURE 3 C). Telson 2 times longer than second abdominal somite; anus located dorsally.
Rostrum ( Fig. 3 View FIGURE 3 E) weakly developed, slightly projecting ventrally.
Oral cone ( Fig. 3 View FIGURE 3 E, F) short and robust, with distal disk formed by labrum and labium and ornamented with setules.
Egg sacs not observed.
Furca ( Fig. 3 View FIGURE 3 B, D) elongate, longer than 2 free abdominal somites and telson together, about 12 times longer than wide, ornamented with rows of spinules, and bearing 7 setae of different lengths (2 setae lost in holotype), one seta is small (see Fig. 3 View FIGURE 3 B).
Antennule (Fig. 4 A–D) 21segmented, with setal formula beginning with proximal segment 1, 2, 2, 2, 2, 2, 2, 2, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2+aesthetasc, 2, 4, 6.
Antenna (Fig. 4 E, F; 5 A, B): small coxa without ornamentation and setation, elongate basis with spinules on outer margin. Exopod 1segmented, with 3 smooth setae. Endopod 2segmented; segment 1 elongate, with spinules along outer and inner margins; segment 2 short, ornamented with setules, armed with 4 setae, 1 seta long and thick, bluntpointed and toothed terminally.
Mandible ( Fig. 5 View FIGURE 5 C): gnathobase long and slender, toothed terminally; palp 2segmented, each segment with one seta.
Maxillule ( Fig. 5 View FIGURE 5 D) bilobed, ornamented with spinules; smaller outer lobe bearing 4 setae, three terminal and one subterminal; inner lobe with five terminal setae.
Maxilla ( Fig. 5 View FIGURE 5 E, F) 2segmented: segment 1 wide; segment 2 elongate, with clawlike distal part; inner lob of the first segment armed with 2 setae (1 small).
Maxilliped ( Fig. 6 View FIGURE 6 A) syncoxa with 1 long inner seta; basis with inner seta along inner margin of the segment. Endopod 3segmented: segment 1 with 2 short posterior setae; segment 2 with 2 longer posterior setae; segment 3 bearing 2 terminal setae, 1 seta long and thick, bluntpointed and toothed terminally.
Legs 1–4 biramous ( Figs. 6 View FIGURE 6 B; 7 A, B; 8 A) with 3segmented rami ornamented by spinules and scales, as illustrated. Formula for the armature of legs 1–4 in Table 1 View TABLE 1 . Leg 1: first segment of exopod with falcate, strong outer spine curved inward; third exopodal segment with 2 outer spines.
Neobrychiopontius galeronae gen. nov., sp. nov., holotype female. A, antennule, segments 1 to 14; B, antennule, segments 15 to 21; C, antennule, segments 9 to 11; D, antennule, segments 20 to 21; E, antenna; F, antenna, terminal element and distal part of second endopodal segment. Arrows to location of missing setae.
Leg 5 ( Figs. 8 View FIGURE 8 B): lateroventral, 1segmented, ornamented with spinules and armed with 4 setae. Leg 6 ( Fig. 3 View FIGURE 3 C) represented by genital flap bearing 2 setae. Colour unknown.
Male unknown.
TABLE 1. Formula of the armature of swimming legs 1 – 4, holotype female of Neobrychiopontius galeronae gen. nov., sp. nov. Roman numerals indicate spines, Arabic numerals indicate setae.
| Coxa | Basis | Exopod | Endopod |
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| Leg 1 01 | 11 | I1;I1;II,4 | 01;02;1,2,3 |
| Leg 2 01 | 10 | I1;I1;III,I,4 | 01;02;1,2,3 |
| Leg 3 01 | 10 | I1;I1;III,I,4 | 01;02;1,I,3 |
| Leg 4 01 | 10 | I1;I1;III,I,4 | 01;02;1,I,2 |
| SMF |
Forschungsinstitut und Natur-Museum Senckenberg |
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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