Saging cebuana, Uyeno & Tang & Nagasawa, 2013
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publication ID |
https://doi.org/ 10.5281/zenodo.5352364 |
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DOI |
https://doi.org/10.5281/zenodo.5449977 |
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persistent identifier |
https://treatment.plazi.org/id/03F8E528-C344-6D11-FEC7-C0ECFA65FC31 |
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treatment provided by |
Tatiana |
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scientific name |
Saging cebuana |
| status |
sp. nov. |
Saging cebuana , new species
( Figs. 1–3 View Fig View Fig View Fig )
Etymology. — The specific name of the new species, cebuana , refers to the type locality, Cebu Island.
Allotype – adult male ( ZRC 2013.0517 View Materials ), collection data same as those of holotype.
Paratypes – 5 adult females and 1 adult male ( ZRC 2013.0518 View Materials ) in 70% ethanol ; 6 adult females and 1 adult male (NSMT-Cr 22374) in 70% ethanol, all collection data same as those of holotype.
Description. — Female holotype. Body ( Fig. 1A, B View Fig ) 853 long, laterally compressed, and slightly curved in lateral view. Prosome 601 long. Cephalothorax ( Fig. 1A, B View Fig ) slightly wider than long, 228 × 248, rounded, and composed of cephalosome and first pedigerous somite. Second to fourth pedigerous somites and urosomites free, progressively narrower posteriorly. Genital double-somite quadrangular, wider than long, 78 × 111, and widest at mid-length.Abdomen 135 long, composed of three free somites. Caudal ramus ( Fig. 1C View Fig ) longer than wide, 27 × 23, with six setae (seta I not observed).
Rostrum ( Fig. 1A View Fig ) large, highly protuberant. Antennule ( Fig. 1D View Fig ) six-segmented (articulation between ancestral segments XIV–XVII and XVIII–XX not expressed), with pointed, outwardly curved process on anterior margin of proximal-most segment; armature formula 5, 15, 8, 4, 2 + 1 asethetasc, 7 + 1 aesthetasc; all setae naked. Antenna ( Fig. 1E View Fig ) four-segmented, composed of coxobasis and 3-segmented endopod; coxobasis large, bearing one distal plumose seta; first endopodal segment rod-like, as long as coxobasis, and armed with one naked seta; second endopodal segment with two pectinate processes (larger one with numerous rows of spinules) and one inner apical claw; terminal endopodal segment extending beyond pectinate processes, with two apical claw-like spines and three naked setae. Postantennal process ( Fig. 1F View Fig ) present. Additional spiniform process ( Fig. 1F View Fig ) present near base of postantennal process. Labrum ( Fig. 1G View Fig ) broad, indented along posterior margin, and fringed with spinules. Mandible ( Fig. 1H View Fig ) one-segmented, with one terminal and one subterminal, serrated blades. Paragnath ( Fig. 1I View Fig ) triangular, ornamented with spinules apically. Maxillule ( Fig. 1J View Fig ) represented by simple lobe armed with three long, naked and one long, plumose setae. Maxilla ( Fig. 2A View Fig ) two-segmented, composed of syncoxa and basis; former unarmed and latter tapering into apically serrated process and bearing one subterminal naked seta. Maxilliped ( Fig. 2B View Fig ) two-segmented, composed of unarmed syncoxa and irregularly-shaped basis with two minute spines near apex.
Legs 1 to 4 ( Fig. 2C–F View Fig ) biramous; leg 1 with two-segmented rami; legs 2–4 with three-segmented exopod and two-segmented endopod. Leg armature formula as follows:
Leg 1 ( Fig. 2C View Fig ) lamelliform; intercoxal sclerite triangular, ornamented with spinules near posterior margin; coxa ornamented with rows of setules along outer margin; basis with row of spinules along inner distal margin; both rami with plumose setae, excluding outer setae on exopod. Intercoxal sclerite of legs 2 to 4 ( Fig. 2D–F View Fig ) with rows of spinules at distolateral corners. Coxa of legs 2 and 3 ( Fig. 2D–F View Fig ) with several rows of spinules on anterior surface and along distolateral corner; coxa of leg 4 similar to that of leg 3 except without distolateral spinules. Basis of legs 2 to 4 ( Fig. 2D–F View Fig ) with row of spinules along inner margin and at insertion point of endopod. Exopod of legs 2 and 3 ( Fig. 2D, E View Fig ) bearing plumose setae and stout, serrated spines, each with subterminal flagellum. Leg 4 exopod ( Fig. 2F View Fig ) bearing naked setae, except for inner seta on middle segment; terminal exopodal segment elongate, with two apical knobs, each bearing one pointed process. Endopod of legs 2 to 4 ( Fig. 2D–F View Fig ) ornamented with spinules along outer margin of proximal segment and bearing stout, serrated spines and plumose setae (except for innermost seta on distal endopodal segment of leg 4). Proximal endopodal segment of legs 2 and 3 ( Fig. 2D, E View Fig ) highly elongated, as long as exopod in leg 2 and longer than exopod in leg 3.
Leg 5 ( Fig. 2G View Fig ) uniramous, composed of protopod and onesegmented exopod; protopod bearing one long naked seta; exopod bearing four long naked setae. Leg 6 ( Fig. 2G View Fig ) knoblike, bearing three naked setae in egg sac attachment area.
Male allotype: Body ( Fig. 3A, B View Fig ) 510 long, with weak lateral compression. Prosome 319 long. Cephalothorax ( Fig. 3A View Fig ) subquadrate, longer than wide, 186 × 157, and composed of cephalosome and first pediger. Second to fourth pedigerous somites and urosomites free, narrowing posteriorly. Genital somite ( Fig. 3C View Fig ) wider than long, 65 × 72, rectangular, and with paired genital opercula located posteroventrally. Abdomen 92 long, composed of three free somites. Caudal ramus longer than wide, 20 × 15, armed as in female.
Antennule ( Fig. 3D View Fig ) with smaller pointed process on first segment. Maxilliped ( Fig. 3E View Fig ) four-segmented, highly developed as grasping organ; proximal segment (syncoxa) large, unarmed; second segment (basis) bearing two proximal setae and ornamented with irregular rows of small denticles; third (first endopodal) segment small, unarmed; terminal (distal endopodal) segment curved, claw-like, bearing three setae and one conical process near base.
Intercoxal sclerite of leg 1 ( Fig. 3F View Fig ) rod-like, with two patches of spinules. Leg 1 ( Fig. 3F View Fig ) biramous, not lamelliform; coxa with one inner plumose seta; basis ornamented with spinules along posterior margin and bearing one outer plumose seta and one inner naked seta; proximal exopodal segment with one outer and one inner naked seta; terminal exopodal segment with seven naked setae; armature formula of endopod as in female. Endopod of leg 2 ( Fig. 3G View Fig ) with patch of spinules near distal margin of proximal segment and lacking two inner setae on terminal segment. Endopod of leg 3 ( Fig. 3H View Fig ) without small inner seta on terminal segment. Leg 6 ( Fig. 3C View Fig ) modified, represented by unarmed genital operculum.
Variability. — Three female paratypes with multiseriate egg sacs ( Fig. 2H View Fig ). Measurements of female paratypes (n = 11) are as follows: body length (excluding caudal setae) 750–941 (860 ± 61); prosome length 549–667 (614 ± 40); cephalothorax length 251–298 (273 ± 15) and width 225–301 (263 ± 24); genital double-somite length 60–78 (69 ± 5) and width 105–122 (115 ± 6); abdomen length 105–159 (135 ± 15); caudal ramus length 21–27 (25 ± 2) and width 17–21 (18 ± 1).
Measurements of male paratypes (n = 2) are as follows: body length (excluding caudal setae) 465–494 (480 ± 20); prosome length 297–307 (302 ± 7); cephalothorax length 161–182 (172 ± 14) and width 144–146 (145 ± 2); genital somite length 56–63 (59 ± 5) and width 65–75 (70 ± 7); abdomen length 81–89 (85 ± 6); caudal ramus length 16 (16 ± 0) and width 13–14 (13 ± 1).
Attachment site. — Surface of the head and the trunk.
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.