Saging cebuana Uyeno & Tang & Nagasawa 2013, new species
Creators: name: Uyeno, Daisuke
name: Tang, Danny
name: Nagasawa, Kazuya
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Hexanauplia
Cyclopoida
Taeniacanthidae
Saging
Saging cebuana

description: Saging cebuana, new species   
(Figs. 1–3)  
  Etymology.  — The specific name of the new species, cebuana, refers to the type locality, Cebu Island.   
  Material examined.  — Holotype: adult female (ZRC 2013.0516), ex Pseudomonacanthus macrurus (Bleeker) (Tetraodontiformes: Monacanthidae), Pasil Fish Market (10°17'N, 123°53'E), Cebu Island, the Philippines, 4 Mar.2009.   
Allotype – adult male (ZRC 2013.0517), collection data same as those of holotype.  
Paratypes – 5 adult females and 1 adult male (ZRC 2013.0518) 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) 853 long, laterally compressed, and slightly curved in lateral view. Prosome 601 long. Cephalothorax (Fig. 1A, B) 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) longer than wide, 27 × 23, with six setae (seta I not observed).   
Rostrum (Fig. 1A) large, highly protuberant. Antennule (Fig. 1D) 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) 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) present. Additional spiniform process (Fig. 1F) present near base of postantennal process. Labrum (Fig. 1G) broad, indented along posterior margin, and fringed with spinules. Mandible (Fig. 1H) one-segmented, with one terminal and one subterminal, serrated blades. Paragnath (Fig. 1I) triangular, ornamented with spinules apically. Maxillule (Fig. 1J) represented by simple lobe armed with three long, naked and one long, plumose setae. Maxilla (Fig. 2A) 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) two-segmented, composed of unarmed syncoxa and irregularly-shaped basis with two minute spines near apex.  
Legs 1 to 4 (Fig. 2C–F) 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) 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) with rows of spinules at distolateral corners. Coxa of legs 2 and 3 (Fig. 2D–F) 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) with row of spinules along inner margin and at insertion point of endopod. Exopod of legs 2 and 3 (Fig. 2D, E) bearing plumose setae and stout, serrated spines, each with subterminal flagellum. Leg 4 exopod (Fig. 2F) 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) 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) highly elongated, as long as exopod in leg 2 and longer than exopod in leg 3.  
Leg 5 (Fig. 2G) uniramous, composed of protopod and onesegmented exopod; protopod bearing one long naked seta; exopod bearing four long naked setae. Leg 6 (Fig. 2G) knoblike, bearing three naked setae in egg sac attachment area.  
Male allotype: Body (Fig. 3A, B) 510 long, with weak lateral compression. Prosome 319 long. Cephalothorax (Fig. 3A) 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) 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) with smaller pointed process on first segment. Maxilliped (Fig. 3E) 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) rod-like, with two patches of spinules. Leg 1 (Fig. 3F) 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) with patch of spinules near distal margin of proximal segment and lacking two inner setae on terminal segment. Endopod of leg 3 (Fig. 3H) without small inner seta on terminal segment. Leg 6 (Fig. 3C) modified, represented by unarmed genital operculum.  
  Variability.  — Three female paratypes with multiseriate egg sacs (Fig. 2H). 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.
description: Published as part of Uyeno, Daisuke, Tang, Danny & Nagasawa, Kazuya, 2013, Saging Cebuana, A New Genus And Species Of Taeniacanthid Copepod (Cyclopoida) Parasitic On A Filefish (Actinopterygii: Monacanthidae) Collected From Cebu Island, The Philippines, pp. 515-523 in Raffles Bulletin of Zoology 61 (2) on pages 517-521, DOI: 10.5281/zenodo.5352364