Taxonomic review of the genus Stenocaris Sars (Copepoda, Harpacticoida, Cylindropsyllidae), with (re)descriptions of two Stenocaris species from the Far East
Abstract:The taxonomic concept of the genus Stenocaris Sars, 1909 is uncertain because none of the synapomorphies for the species of Stenocaris are defined. Detailed comparison of previous records of Stenocaris minor (T. Scott, 1892) from different localities reveals that this species represents a species complex composed of two species, S. minor s. str. and S. minor sensu Cottarelli & Venanzetti, 1989. Because the latter species has fundamental differences in the nature of the fifth leg in females and the sexual d… Show more
“…Thus far, only five species of harpacticoid copepods have been described or reported from the island: Bicorniphontodes lacuna Kim, Lee & Cho, 2021 (Ancorabolidae), from the subtidal zone off Gajae Rock [5]; Stenocaris marcida Kim, Cho, Yoon & Lee, 2023 (Cylindropsyllidae), from the sublittoral sandy bottom, 73.3 m in depth [6]; Dactylopodamphiascopsis latifolius (Sars, 1909) (Miraciidae), from algal beds [7]; Goniopsyllus dokdoensis Cho, Kim & Lee, 2010 (Peltidiidae), from zooplankton samples [8]; and Kioloaria similis (Kim & Kim, 1996) (Porcellidiidae), associated with the hermit crab, Pagurus similis (Ortmann, 1892) [9].…”
A new species of the genus Eupelte Claus, 1860, was obtained from the algal bed bottom in Dokdo Island, East Sea of Korea, using a light trap. Specimens of both sexes of the Korean new species are described in detail and compared with its congeners. The present species, Eupelte dokdoensis sp. nov., is closely similar to E. aurulenta Wells and Rao, 1987, found in algal sands from the Andaman and Nicobar Islands, and E. setacauda Monk, 1941, collected from seaweeds in the Californian coast of the USA. These species share the body length (0.5–07 mm), the nine-segmented A1, the setation of the first and second endopodal segments of P1 (one and four setae), P4 exp-3 with three inner setae, and enp-3 of P2–P4 with five setae in both sexes. The new species can be readily discernable from the previous two species by the short rostrum with a serrate distal margin, the shape of the maxillipedal basis, the setation and surface ornamentation of P1 enp-2 (covered with long setules), the exp-3 of P3 and P4 with thicker middle inner seta, and the setation of female and male P5 exopod and baseoendopod (six and six, four and two setae, respectively). In addition, the zoogeography of the valid species of the genus Eupelte is briefly discussed, and a diagnostic key to the females of the species is provided. Eupelte dokdoensis sp. nov. described herein is the first report of the genus from Korean waters and is the fourteenth member of the genus.
“…Thus far, only five species of harpacticoid copepods have been described or reported from the island: Bicorniphontodes lacuna Kim, Lee & Cho, 2021 (Ancorabolidae), from the subtidal zone off Gajae Rock [5]; Stenocaris marcida Kim, Cho, Yoon & Lee, 2023 (Cylindropsyllidae), from the sublittoral sandy bottom, 73.3 m in depth [6]; Dactylopodamphiascopsis latifolius (Sars, 1909) (Miraciidae), from algal beds [7]; Goniopsyllus dokdoensis Cho, Kim & Lee, 2010 (Peltidiidae), from zooplankton samples [8]; and Kioloaria similis (Kim & Kim, 1996) (Porcellidiidae), associated with the hermit crab, Pagurus similis (Ortmann, 1892) [9].…”
A new species of the genus Eupelte Claus, 1860, was obtained from the algal bed bottom in Dokdo Island, East Sea of Korea, using a light trap. Specimens of both sexes of the Korean new species are described in detail and compared with its congeners. The present species, Eupelte dokdoensis sp. nov., is closely similar to E. aurulenta Wells and Rao, 1987, found in algal sands from the Andaman and Nicobar Islands, and E. setacauda Monk, 1941, collected from seaweeds in the Californian coast of the USA. These species share the body length (0.5–07 mm), the nine-segmented A1, the setation of the first and second endopodal segments of P1 (one and four setae), P4 exp-3 with three inner setae, and enp-3 of P2–P4 with five setae in both sexes. The new species can be readily discernable from the previous two species by the short rostrum with a serrate distal margin, the shape of the maxillipedal basis, the setation and surface ornamentation of P1 enp-2 (covered with long setules), the exp-3 of P3 and P4 with thicker middle inner seta, and the setation of female and male P5 exopod and baseoendopod (six and six, four and two setae, respectively). In addition, the zoogeography of the valid species of the genus Eupelte is briefly discussed, and a diagnostic key to the females of the species is provided. Eupelte dokdoensis sp. nov. described herein is the first report of the genus from Korean waters and is the fourteenth member of the genus.
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