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Kim, J.G., K.H. Cho, S.M. Yoon & J.M. Lee. (2023). Taxonomic review of the genus Stenocaris Sars (Copepoda, Harpacticoida, Cylindropsyllidae), with (re)descriptions of two Stenocaris species from the Far East. PeerJ. 11: 1-38. e14623. Jan 2023.
443659
10.7717/peerj.14623 [view]
Kim, J.G., K.H. Cho, S.M. Yoon & J.M. Lee
2023
Taxonomic review of the genus <i>Stenocaris</i> Sars (Copepoda, Harpacticoida, Cylindropsyllidae), with (re)descriptions of two <i>Stenocaris</i> species from the Far East.
PeerJ
11: 1-38. e14623. Jan 2023
Publication
Available for editors  PDF available
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 dimorphism of the second leg in males, we propose a new species for S. minor sensu Cottarelli & Venanzetti, 1989, S. figaroloensis sp. nov. We also suggest that S. minor sensu Apostolov, 1971, S. minor sensu Marinov, 1971, and S. minor sensu Apostolov & Marinov, 1988 from the Black Sea and S. minor sensu Wilson, 1932 from North America should be relegated to species inquirenda in the genus. Taxonomic review of the morphology of all Stenocaris species indicated that the generic concept must be restricted to accommodate S. minor s. str., S. gracilis Sars, 1909, S. intermedia Itô, 1972, S. figaroloensis sp. nov., and the South Korean new species, S. marcida sp. nov., based on the synapomorphic condition of the confluent fifth leg in males. As a result of our analysis, two Stenocaris species, S. baltica Arlt, 1983 and S. pygmaea Noodt, 1955, are transferred to the genus Vermicaris Kornev & Chertoprud, 2008 as V. baltica (Arlt, 1983) comb. nov. and V. pygmaea (Noodt, 1955) comb. nov. based on the synapomorphic characters of a reduced condition of the second and fifth legs. Additionally, S. arenicola Wilson, 1932 and S. kliei (Kunz, 1938) are allocated to a new genus, Huysicaris gen. nov., mainly characterized by obvious caudal rami with a recurved dorsal spinous process and convex inner margins, as H. arenicola (Wilson, 1932) comb. nov. and H. kliei (Kunz, 1938) comb. nov. A marine interstitial harpacticoid collected from the subtidal substrate off Dok-do Island in the East Sea of South Korea is proposed as S. marcida sp. nov. and the distribution of S. intermedia, originally known from its type locality in Japanese waters only, is extended to the East Sea of Korea and Russia. We provide their detailed descriptions and illustrations and discuss the morphological characters supporting their identities.
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Date
action
by
2023-01-20 16:46:08Z
created
2023-03-01 12:23:03Z
changed
2023-03-17 19:15:07Z
changed

Huysicaris Kim J.G., Cho, Yoon & Lee J.M., 2023 (original description)
Huysicaris kliei (Kunz, 1938) (new combination reference)
Stenocaris baltica Arlt, 1983 accepted as Vermicaris baltica (Arlt, 1983) (new combination reference)
Stenocaris kliei Kunz, 1938 accepted as Huysicaris kliei (Kunz, 1938) (new combination reference)
Stenocaris minor (Scott T., 1893) (taxonomy source)
Stenocaris pygmaea Noodt, 1955 accepted as Vermicaris pygmaea (Noodt, 1955) (new combination reference)
Vermicaris baltica (Arlt, 1983) (new combination reference)
Vermicaris pygmaea (Noodt, 1955) (new combination reference)
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