A reappraisal of the genera Nannopus Brady, 1880 and Ilyophilus Lilljeborg, 1902 (Copepoda, Harpacticoida, Nannopodidae) with a description of N. parvipilis sp. nov. from South Korea

in Crustaceana
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The genera Nannopus Brady, 1880 and Ilyophilus Lilljeborg, 1902 are reappraised based on the characteristic features of a new species, Nannopus parvipilis sp. nov., collected from the brackish mud flat on Jindo Island, South Korea. Nannopus species have long been known as having a two-segmented P3 endopod. However, we discovered N. parvipilis sp. nov. having a one-segmented P3 endopod in accordance with the description of the genus by Brady. It implies that Brady’s generic diagnosis was appropriate and tentatively correct, and such species having a two-segmented P3 endopod but still being placed in Nannopus should be excluded from the genus. The genus Ilyophilus Lilljeborg, 1902, which has been regarded as a junior synonym of Nannopus, is revived to accommodate these Nannopus species. Thus, Nannopus is now composed of only two species, N. palustris and N. parvipilis sp. nov. and Ilyophilus comprises eight species: I. flexibilis Lilljeborg, 1902, I. perplexus Sars, 1909b comb. nov., I. unisegmentatus (Shen & Tai, 1964) comb. nov., I. didelphis (Fiers & Kotwicki, 2013) comb. nov., I. hirsutus (Fiers & Kotwicki, 2013) comb. nov., I. procerus (Fiers & Kotwicki, 2013) comb. nov., I. scaldicola (Fiers & Kotwicki, 2013) comb. nov., and I. ganghwaensis (Vakita, Kihara & Lee, 2016). In addition, N. palustris sensu Canu, 1892, which was commonly considered as representing the criterion of N. palustris, is established as a new species, I. canui sp. nov., based on the characteristic feature of the P3. A detailed description and illustrations of N. parvipilis sp. nov. are provided.

A reappraisal of the genera Nannopus Brady, 1880 and Ilyophilus Lilljeborg, 1902 (Copepoda, Harpacticoida, Nannopodidae) with a description of N. parvipilis sp. nov. from South Korea

in Crustaceana

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References

BradyG. S.1880. A monograph of the free and semi-parasitic Copepoda of the British Islands II. The Ray Society Series 55. (Ray SocietyLondon).

CanuE.1892. Les copépodes du Boulonnais, morphologie, embryologie, taxonomie. Trav. Lab. Zool. marit. Wimereux6: 127-184.

FiersF.KotwickiL.2013. The multiple faces of Nannopus palustris auct. reconsidered: a morphological approach (Copepoda: Harpacticoida: Nannopodidae). Zool. Anz.253: 36-65.

GarlitskaL.NeretinaT.SchepetovD.MugueN.De TrochM.BaguleyJ. G.AzovskyA.2012. Cryptic diversity of the ‘cosmopolitan’ harpacticoid copepod Nannopus palustris: genetic and morphological evidence. Mol. Ecol.21: 5336-5347.

GurneyR.1932. British fresh-water Copepoda II. The Ray Society Series 119. (Ray SocietyLondon).

HuysR.BoxshallG. A.1991. Copepod evolution. The Ray Society Series 159. (Ray SocietyLondon).

KikuchiY.YokotaK.1984. New records of two freshwater harpacticoid copepods, Nannopus palustris Brady and Leptocaris brevicornis (van Douwe), in Lake Hinuma. Publ. Itako Hydrobiol. Stn.1: 1-9.

KornevP. N.ChertoprudE. S.2008. Copepod crustaceans of the order Harpacticoida of the White Sea: morphology systematics ecology. (KMK Scientific PressMoscow). [In Russian.]

LilljeborgW.1902. Synopsis speciorum huc usque in aquis dulcibus Suecia observatarum familiae Harpacticidarum. K. Svensk. Vet.-Akad. Handl. Band.36: 1-75.

SarsG. O.1909a. An account of the Crustacea of Norway with short descriptions and figures of all the species. V. Copepoda Harpacticoida parts XXVII & XXVIII: 305-336. (Bergen MuseumBergen).

SarsG. O.1909b. Zoological results of the third Tanganyika Expeditions, conducted by Dr. W. A. Cunnington, F.Z.S., 1904-1905. Report on the Copepoda. Proc. Zool. Soc. Lond.1909: 31-77.

ScottT.1902. Notes on the gatherings of Crustacea collected by the fishery steamer “Garland,” the steam-trawlers “Star of Peace” and “Star of Hope,” of Aberdeen, during the year 1901. Rep. Fish. Bd. Scotl.20: 447-484.

ShenC. J.TaiA. Y.1964. Descriptions of new species of freshwater Copepoda from Kwangtung Province, South China. Acta Zootaxonomica Sin.1: 367-396.

StatonJ. L.WickliffeL. C.GarlitskaL.VillanuevaS. M.CoullB. C.2005. Genetic isolation discovered among previously described sympatric morphs of a meiobenthic copepod. J. Crustacean Biol.25: 551-557.

TaiA. Y.SongY. Z.1979. Harpacticoida Sars, 1903. In: ShenC. J. (ed.) Fauna sinica Crustacea freshwater Copepoda: 164-300. (Science PressBeijing). [In Chinese.]

VakatiV.KiharaT. C.LeeW.2016. A new species of the genus Nannopus (Copepoda, Harpacticoida, Nannopodidae) from the mudflat of Ganghwa Island, Korea. Proc. Biol. Soc. Wash.129: 212-233.

WellsJ. B. J.1971. The Harpacticoida (Crustacea: Copepoda) of two beaches in south-east India. J. Nat. Hist.5: 507-520.

YooK. I.LeeW. C.1995. Marine harpacticoid copepods from the Korean waters. The Yellow Sea1: 34-49.

Figures

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    Nannopus parvipilis sp. nov., female. A, habitus, lateral; B, urosome, dorsal; C, urosome, ventral; D, ridge on body surface; E, caudal ramus, dorsal; F, genital field; G, antennule.

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    Nannopus parvipilis sp. nov., female. A, rostrum; B, antenna; C, mandible; D, maxillule; E, maxilla; F, maxilliped.

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    Nannopus parvipilis sp. nov., female. A-E, P1-P5.

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    Nannopus parvipilis sp. nov., male. A, habitus, lateral; B, antennule, anterior; C, antennule, posterior; D, P5 and P6.

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