taxonID	type	description	language	source
03DCE149F626FB7550B778C3BC1095CD.taxon	description	(Figs. 2 - 5) Type locality. Hansando Island, 12 m water depth, South Sea of Korea. (34 ° 46 ′ 33.2 ″ N, 128 ° 31 ′ 35.0 ″ E).	en	Bang, Hyun Woo (2020): A new species of the genus Eurycletodes Sars G. O., 1909 (Copepoda: Harpacticoida: Argestidae) from South Sea of Korea. Journal of Species Research 9 (4): 480-488, DOI: 10.12651/JSR.2020.9.4.480
03DCE149F626FB7550B778C3BC1095CD.taxon	materials_examined	Material examined. Holotype 1 $ (KDELIV 000000 3114) dissected on eight slides. Paratype 2 $$ (KDELIV 0000003115, KDELIV 0000003116) dissected on eight slides. All from the type locality, collected by H. W. Bang and H. Moon in May 2019.	en	Bang, Hyun Woo (2020): A new species of the genus Eurycletodes Sars G. O., 1909 (Copepoda: Harpacticoida: Argestidae) from South Sea of Korea. Journal of Species Research 9 (4): 480-488, DOI: 10.12651/JSR.2020.9.4.480
03DCE149F626FB7550B778C3BC1095CD.taxon	etymology	Etymology. The species name is derived from the Latin ‘ vadum ’, meaning shallow water, referring to the depth of water of the type locality.	en	Bang, Hyun Woo (2020): A new species of the genus Eurycletodes Sars G. O., 1909 (Copepoda: Harpacticoida: Argestidae) from South Sea of Korea. Journal of Species Research 9 (4): 480-488, DOI: 10.12651/JSR.2020.9.4.480
03DCE149F626FB7550B778C3BC1095CD.taxon	description	Description. Female. Body (Fig. 2 A, 2 B) cylindrical, no clear distinction between prosome and urosome. Total body length 619 μm (n = 3; range: 585 - 645 μm), measured from anterior margin of rostrum to posterior margin of caudal rami. Largest width measured at posterior margin of cephalic shield: 172 μm. Rostrum (Figs. 2 A, 2 B, 3 A) triangular, well-developed, fused to cephalothorax, with two sensilla. Cephalothorax (Fig. 2 A) with reticulate pattern, pedigerous somites with posterior margin strongly serrated dorsally and laterally. Cephalothorax and free thoracic somites with sensilla arising from tubercles, sensillar pattern and tube pores on cephalothorax and body somites as figured. Urosome (Fig. 2 A, 2 B) 5 - segmented, comprising P 5 - bearing somite, genital double-somite and three free abdominal somites. All urosomites with coarsely denticulated posterior margin dorsally and laterally, covered with minute spinules dorsally, laterally and ventrally. Second and third urosomites partly fused forming genital-double somite. Genital field (Fig. 5 C) positioned situated proximally on first half of genital double-somite, with a copulatory pore, and P 6 reduced, represented by bifid processes (arrowed in Fig. 5 C). Anal somite (Figs. 2 A, 3 H) as long as board, almost square laterally and dorsally, with tube pores ventrally, anal operculum with several denticles and dorsal pair of sensillate tubercles. Caudal rami (Fig. 3 I) semi cylindrical, about 1.6 times as long as wide, with conspicuous tube pore ventrally (arrow in Figs. 2 A, 3 I), each ramus with seven setae: setae I- II bare, short, of subequal lengths, seta III arising from small protrusion, seta IV bare, seta V longest, seta VI bare and short, arising at inner distal corner, seta VII tri-articulate at base. Antennule (Fig. 3 B). 6 - segmented; segment 1 largest, with spinular rows, segment 3 with aesthetasc fused basally to seta and set on pedestal, segment 4 with modified element, last segment with six setae, two modified elements, one geniculate seta, and apical acrothek. Armature formula: 1 - [0], 2 - [3], 3 - [3 + (1 + ae)], 4 - [1], 5 - [1], 6 - [9 + acrothek]. Apical acrothek consisting of an aesthetasc fused basally to one bare and one geniculate seta. Antenna (Fig. 3 C). Allobasis, without abexopodal seta. Exopod reduced to an almost indiscernible bulb without armature (arrowed in Fig. 3 C). Allobasis and endopod with spinular row along inner margin, endopod with two bare inner spines, and four distal elements distally. A A, B 50 B C C 50 Mandible (Fig. 3 D) with gnathobase bearing three strong teeth around distal margin, without seta. Mandibular palp 1 - segmented, with spinules subdistally, with three bare setae distally. Maxillule (Fig. 3 F). Praecoxal arthrite well-developed, with two bipinate, one unipinnate, and three bare spines distally, with bipinnate spine laterally, and with one bare B A surface seta. Coxa with one geniculate seta and one bare seta apically. Basis, endopod and exopod reduced. Maxilla (Fig. 3 G). Syncoxa with two endites and a row of long spinules along outer margin, proximal endite with two bare setae, distal endite with two slender setae and one strong spinulose element. Allobasis with spinules, drawn out into strong, slightly curved, distally bipinnate claw, with two bare setae. Endopod 1 - segmented, small, with two naked setae. Maxilliped (Fig. 3 E). Subchelate. Syncoxa with one plumose seta on inner distal corner and with long setules or spinules. Basis with a row of spinules along palmar region, unarmed. Endopodal segment produced into strong and distally pinnate curved claw. Swimming legs 1 - 4 with wide intercoxal sclerite and praecoxae, biramous, endopods 1 - segmented, exopods 3 - segmented. Coxae and bases with surface ornamentations of spinules as figured. P 1 (Fig. 4 A). Coxa slightly bigger than basis, with two spinular rows on anterior surface, and row of spinules along outer margin. Basis with strong bipinnate outer spine on outer margin and bipinnate spine on inner distal surface, with several spinules and setules as figured. Exopod 3 - segmented, exp- 1 longest, without inner seta; exp- 2 with one stout, pinnate outer spine and one long, plumose inner seta; exp- 3 with two pinnate distal setae and two well-developed pinnate outer spines. Endopod 1 - segmented, with two distal setae and one pinnate outer spine. P 2 - P 4 (Figs. 4 B, 5 A, 5 B) with small triangular praecoxa. Coxa large, with row of spinules on anterior surface. Basis with pinnate outer spine. Exp- 1 twice as long as exp- 2, with one pinnate outer spine, and one long plumose inner seta, except P 4; exp- 2 shortest, with one inner plumose long seta, and one bipinnate outer spine; third segment longest, with three bipinnate outer spines, two apical and two inner elements, P 4 exp- 3 proximal inner element bipinnate, short (arrowed in Fig. 5 B). Endopod 1 - segmented, with spinules along inner to outer distal margins, with two pinnate distal setae. Armature formula for swimming legs: Exopod Endopod P 1 0.1.022 021 P 2 1.1.223 020 P 3 1.1.223 020 P 4 0.1.223 020 P 5 (Fig. 4 C) fused medially, and exopod and baseoendopod separate. Baseoendopod with a long outer setophore bearing one plumose basal seta, and with one pore near proximal area of setophore. Endopodal lobe with spinules at inner and outer margin, with two bipinnate setae and one pore on anterior surface. Exopod elongat- ed, 3.4 times as long as wide, with one pore on anterior surface near apical margin, with three outer and two terminal setae, and with one oblique cleavage ornamented on anterior surface near proximal area (arrowed in Fig. 4 C). Male. Unknown.	en	Bang, Hyun Woo (2020): A new species of the genus Eurycletodes Sars G. O., 1909 (Copepoda: Harpacticoida: Argestidae) from South Sea of Korea. Journal of Species Research 9 (4): 480-488, DOI: 10.12651/JSR.2020.9.4.480
03DCE149F620FB7450FC7F2FBEC69574.taxon	description	– P 1 exp- 2 without inner seta, and P 5 endopodal lobes with inner seta ···························································· ··············· subgenus Eurycletodes (Eurycletodes) ······ 3 – P 5 endopodal lobes without inner element ················ ······························· subgenus E. (Oligocletodes) ······ 6 2. Maxillule exopod and endopod each represented by one seta; maxilliped with one seta on syncoxa ·········· ···························································· E. ephippiger * – Maxillule endopod reduced, and exopod represented by one seta; maxilliped with two setae on syncoxa ··· ····················································· E. paraephippiger * 3. P 1 exp- 3 with four elements ···································· 4 – P 1 exp- 3 with five elements ····································· 5 4. Mandibular palp 2 - segmented ············ E. (E.) serratus – Mandibular palp 1 - segmented ······· E. (E.) laticaudata 5. Anal operculum with denticles ········ E. (E.) gorbunovi – Anal operculum with smooth distal margin ················ ··················································· E. (E.) rectangulatus 6. P 1 endopod 2 - segmented ········································· 7 – P 1 endopod 1 - segmented ······································· 15 7. P 1 endopod distal segment with four elements ········ 8 – P 1 endopod distal segment with three elements ···· 10 8. P 4 endopod- 2 with four setae ·································· 9 – P 4 endopod- 2 with five setae ··········· E. (O.) peruanus 9. P 5 exopod ovate about twice as long as wide, with five setae ··················································· E. (O.) pori – P 5 exopod rectangular and elongated, with three setae ················································· E. (O.) profundus 10. P 1 exp- 3 with five setae, and P 4 endopod 2 - segmented ···································································· 11 – P 1 exp- 3 with five setae, and P 4 endopod 1 - segmented ················································ E. (O.) arcticus – P 1 exp- 3 with four setae, and P 4 endopod 2 - segmented ····················································· E. (O.) latus 11. P 2 exp- 1 with inner seta, and exp- 3 with seven setae; P 3 enp- 3 with four or five setae ····························· 12 – P 2 exp- 1 with inner seta, and exp- 3 with six setae; P 3 enp- 3 with three setae ··············· E. (O.) verisimilis – P 2 exp- 1 without inner seta, and exp- 3 with six setae; P 3 enp- 3 with 3 setae ·············· E. (O.) irelandica 12. P 2 - P 4 exp- 1 with inner seta ·································· 13 – P 2 - P 4 exp- 1 with 1, 1, 0 inner seta, respectively ·· 14 – P 3 - P 4 exp- 1 without inner seta ································· ·················································· E. (O.) quadrispinosa 13. P 2 and P 3 enp- 2 with five elements ··························· ························································· E. (O.) echinatus – P 2 and P 3 enp- 2 with three and four elements ··········· ······················································· E. (O.) parasimilis 14. P 2 endopod distal segment with three elements ········ ································································ E. (O.) petiti – P 2 and P 3 endopod distal segment with four elements ···················································· E. (O.) similis – P 3 endopod distal segment with five elements ·········· ··························································· E. (O.) monardi 15. P 4 endopod 1 - segmented ······································· 16 – P 4 endopod absent ····························· E. (O.) minutus 16. P 1 exp- 3 with five elements ··································· 17 – P 1 exp- 3 with four elements ·································· 19 17. P 2 exp- 3 with seven elements ································ 18 – P 2 exp- 3 with six elements ·············· E. (O.) hoplurus 18. P 3 exp- 2 without inner seta, and P 1 - P 4 endopod with 4, 4, 2, 2 setae ·························· E. (O.) oblongus – P 3 and P 4 exp- 2 with inner seta; P 1 - P 4 endopod with 4, 3, 1, 2 setae ································ E. (O.) abyssi – P 1 - P 4 endopod with 3, 2, 4, 2 setae, respectively ····· ·················································· E. (O.) uniarticulatus 19. P 2 - P 4 exopod with seven setae; P 1 and P 2 endopod with three and two setae ········································· 20 – P 2 - P 4 exopod with 6, 6, 5 setae, respectively, and P 1 - P 2 endopod with four setae ············ E. (O.) major 20. P 5 exopod with four setae, and P 1 endopod reaches only to end of exp- 1 ··············································· 21 – P 5 exopod with five setae ······································· 22 21. A 2 exopodal seta absent; caudal rami more than 3 times as long as wide ································ E. (O.) diva – A 2 with exopodal seta; caudal rami not much longer than their width ································ E. (O.) aculeatus 22. A 1 last segment with two inner setae; mandibular palp with three setae ············ E. (O.) vadumus sp. nov. – A 1 last segment with one inner seta; mandibular palp with four setae ····························· E. (O.) denticulatus * E. paraephippiger and E. ephippiger, they do not show any apomorphy of either of the 2 subgenera (Gomez, 2018).	en	Bang, Hyun Woo (2020): A new species of the genus Eurycletodes Sars G. O., 1909 (Copepoda: Harpacticoida: Argestidae) from South Sea of Korea. Journal of Species Research 9 (4): 480-488, DOI: 10.12651/JSR.2020.9.4.480
