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Issue: Vol. 5814 No. 3: 22 May 2026
Type: Article
Published: 2026-05-22
DOI: 10.11646/zootaxa.5814.3.6
Page range: 407-423
Abstract views: 41
PDF downloaded: 0

Two new species of the genus Incisocalliope (Crustacea, Amphipoda, Pleustidae) from Korean waters, with a taxonomic reevaluation of the genus

Department of Biological Sciences; Dankook University; Cheonan; KOREA 31116.
Canadian Museum of Nature; Research Associate; Research and Collections; P.O. Box 3443; Station D; Ottawa; CANADA K1P 6P4.
Crustacea identification key Korea new species Parapleustinae taxonomy

Abstract

This study aims to discover and document amphipods from Korea, contributing to the clarification of the taxonomy of Korean amphipod species. As part of this effort, two new species of the pleustid genus Incisocalliope, I. rotundus sp. nov. and I. truncatus sp. nov. (Parapleustinae, Pleustidae), are described from Korean waters. These two new species are morphologically similar to other species of the genus Incisocalliope. However, although they generally conform to Incisocalliope, they show certain differences from previously described species in the following features: the length of antenna 1 peduncular article 1, the number of marginal setae on mandibular palp article 2, the absence of robust setae on the hind margin of coxa 1, and the setation pattern on the hind margin of gnathopod 2 propodus. These differences are considered non-binary traits that are influenced by the generally larger body size of the two new species. Therefore, we propose an expansion and refinement of the current diagnosis of the genus Incisocalliope to accommodate these variations. Photographs of the two new species in their living state, full illustrations, detailed morphological descriptions, and a revised identification key to the world species of the genus Incisocalliope are provided.

References

  1. Barnard, J.L. (1956) Two rare amphipods from California with notes on the genus Atylus. Bulletin of the Southern California Academy of Science, 55 (1), 35–43.
  2. Barnard, J.L. (1970) Sublittoral Gammaridea (Amphipoda) of the Hawaiian Islands. Smithsonian Contributions to Zoology, 34, 1–286. https://doi.org/10.5479/si.00810282.34
  3. Barnard, J.L. & Reish, D.J. (1959) Ecology of Amphipoda and Polychaeta of Newport Bay, California. Allan Hancock Foundation Publications, Occasional Paper, 21, 1–106.
  4. Bate, C.S. (1858) On some new genera and species of Crustacea Amphipoda. The Annals and Magazine of Natural History, Series 3, 1 (5), 361–362. https://doi.org/10.1080/00222935808696932
  5. Boeck, A. (1871) Crustacea Amphipoda borealia et arctica. In: Forhandlinger i Videnskabs-selskabet i Christiania for 1870. Trykt hos Brøgger & Christie, Christiania, pp. 83–280. https://doi.org/10.5962/bhl.title.2056
  6. Bousfield, E.L. (1985) Mysterious insects of the sea. Rotunda, the magazine of the Royal Ontario Museum, 18 (3), 30–33, pls. 36.
  7. Bousfield, E.L. & Hendrycks, E.A. (1994a) A revision of the family Pleustidae (Amphipoda: Gammaridea) Part I. Systematics and biogeography of component subfamilies. Amphipacifica, 1 (1), 17–57.
  8. Bousfield, E.L. & Hendrycks, E.A. (1994b) The amphipod superfamily Leucothoidea on the Pacific coast of North America. Family Pleustidae: subfamily Pleustinae. Systematics and biogeography. Amphipacifica, 1 (2), 3–69.
  9. Bousfield, E.L. & Hendrycks, E.A. (1995) The amphipod family Pleustidae on the Pacific coast of North America: Part III. Subfamilies Parapleustinae, Dactylopleustinae, and Pleusirinae. Systematics and distributional ecology. Amphipacifica, 2 (1), 65–133.
  10. Buchholz, R. (1874) Crustaceen. Die zweite Deutsche Nordpolarfahrt in den Jahren 1869 und 1870 unter Führung des Kapitän Karl Koldwey, 2, 262–399, pls. 1–15.
  11. Gurjanova, E.F. (1938) Amphipoda, Gammaroidea zalikov Siaukhu i Sudzukhe (Yaponskoe More). [Amphipoda, Gammaroidea of Siaukhu Bay and Sudzukhe Bay (Japan Sea)]. Reports of the Japan Sea Hydrobiological Expedition of the Zoological Institute of the Academy of Sciences USSR in 1934, 1, 241–404.
  12. Hendrycks, E.A. & Bousfield, E.L. (2004) The amphipod family Pleustidae (mainly subfamilies Mesopleustinae, Neopleustinae, Pleusymtinae and Stenopleustinae) from the Pacific coast of North America: systematics and distributional ecology. Amphipacifica, 3 (4), 45–113.
  13. Hirayama, A. (1988) Taxonomic studies on the shallow water gammaridean Amphipoda of West Kyushu, Japan. VIII. Pleustidae, Podoceridae, Priscomilitaridae, Stenothoidae, Synopiidae, and Urothoidae. Publications of the Seto Marine Biological Laboratory, 33 (1/3), 39–77. https://doi.org/10.5134/176149
  14. Horton, T., Lowry, J., De Broyer, C., Bellan-Santini, D., Copilaş-Ciocianu, D., Corbari, L., Costello, M.J., Daneliya, M., Dauvin, J.-C., Fišer, C., Gasca, R., Grabowski, M., Guerra-García, J.M., Hendrycks, E., Hughes, L., Jaume, D., Jazdzewski, K., Kim, Y.-H., King, R., Krapp-Schickel, T., LeCroy, S., Lörz, A.-N., Mamos, T., Senna, A.R., Serejo, C., Souza-Filho, J.F., Tandberg, A.H., Thomas, J.D., Thurston, M., Vader, W., Väinölä, R., Valls Domedel, G., Vonk, R., White, K. & Zeidler, W. (2025) World Amphipoda Database. Incisocalliope J.L. Barnard in J.L. Barnard & Reish, 1959. World Register of Marine Species. Available from: https://www.marinespecies.org/aphia.php?p=taxdetails&id=148578 (accessed 7 July 2025)
  15. Ishimaru, S. (1984) Taxonomic studies of the family Pleustidae (Crustacea, Amphipoda, Gammaridea) from coastal waters of northern Japan. I. The genus Parapleustes. Journal of the Faculty of Science, Hokkaido University, Series VI, Zoology, 23 (4), 403–453.
  16. Kim, W. & Kim, C.B. (1991) The marine amphipod crustaceans of Ulreung Island, Korea. Part III. The Korean Journal of Zoology, 34 (3), 323–337.
  17. Marin, I., Sinelnikov, S. & Sokolova, A. (2013) Ecological remarks and re-description of the hermit crab-associated pleustid amphipod Pleusymtes japonica (Gurjanova, 1938) (Crustacea: Amphipoda: Pleustidae: Pleusymtinae) from the Russian coasts of the Sea of Japan. Zootaxa, 3640 (4), 581–588. https://doi.org/10.11646/zootaxa.3640.4.6
  18. Sars, G.O. (1893) Amphipoda. Part XVI. Paramphitoidae, Epimeridae (part). An account of the Crustacea of Norway, with short descriptions and figures of all the species, I, 341–364, pls. 121–128. https://doi.org/10.5962/bhl.title.1164
  19. Stebbing, T.R.R. (1899) Revision of Amphipoda (continued). The Annals and Magazine of Natural History, Series 7, 4, 205–211. https://doi.org/10.1080/00222939908678185
  20. Stebbing, T.R.R. (1906) Amphipoda I. Gammaridea. Das Tierreich, 21, 1–806.
  21. Watling, L. & Maurer, D. (1973) A new euryhaline species of Parapleustes (Amphipoda) from the east coast of North America. Proceedings of the Biological Society of Washington, 86, 1–8.

How to Cite

Kim, K.-W., Hendrycks, E.A. & Kim, Y.-H. (2026) Two new species of the genus Incisocalliope (Crustacea, Amphipoda, Pleustidae) from Korean waters, with a taxonomic reevaluation of the genus. Zootaxa, 5814 (3), 407–423. https://doi.org/10.11646/zootaxa.5814.3.6