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Issue: Vol. 5750 No. 3: 21 Jan. 2026
Type: Article
Published: 2026-01-21
DOI: 10.11646/zootaxa.5750.3.4
Page range: 387-399
Abstract views: 17
PDF downloaded: 2

Actinopyga atypica sp. nov. plus two new holothuroid records from the coastal waters of Pakistan (Echinodermata: Holothuroidea)

The Marine Reference Collection and Resource Centre; University of Karachi; Karachi; 75270 Pakistan
School of Life Sciences; University of KwaZulu-Natal; P/Bagx 54001; Durban 4000; South Africa
The Marine Reference Collection and Resource Centre; University of Karachi; Karachi; 75270 Pakistan
The Marine Reference Collection and Resource Centre; University of Karachi; Karachi; 75270 Pakistan
Echinodermata North Arabian Sea teatfish Holothuriida Thyonidae Holothuria Selenkothuria Thyonina

Abstract

A new species, Actinopyga atypica sp. nov., in the sea cucumber family Holothuriidae, plus two new holothuroid records from the Pakistan coastal waters are here described. The new species differs from all known species of Actinopyga in possessing a cucumariid-type of calcareous ring accompanied by slender, straight, terminally forked rods in the body wall, unlike the thick, usually well-branched rods of other species of the genus, setting it apart from all known congenerics. Of the two additional records one is another holothuriid herein attributed to the Indo-West Pacific species Holothuria (Selenkothuria) erinacea Semper, 1868. It is suspected to be a juvenile of this species in possessing, in addition to the perforated rods and plates in the body wall, well-formed tables, suspected to be a juvenile character, as pertains in its consubgenerics H. (S.) parva Krauss (in Lampert, 1885) and H. (S.) moebii Ludwig, 1883. The third species is a thyonid, Thyonina bijui Thandar, 2017, belonging to the family Thyonidae (sensu Smirnov 2012), originally described from Kerala, India.

 

References

  1. Ahmed, Q., Ali, Q.M., Shaikh, I. & Thandar, A. (2025) Holothuria (Selenkothuria) parva Krauss (in Lampert, 1885) (Holothuroidea: Holothuriida: Holothuriidae), new addition to the holothuroid fauna of Pakistan. Zootaxa, 5569 (2), 393–399. https://doi.org/10.11646/zootaxa.5569.2.10
  2. Ali, Q.M., Shaikh, I., Thandar, A. & Ahmed, Q. (2024) Actinopyga spinea Cherbonnier, (1980) (Holothuroidea: Holothuriida: Holothuriidae), new addition to the holothuroid fauna of Pakistan. Zootaxa, 5432 (2), 151–159. https://doi.org/10.11646/zootaxa.5432.2.1
  3. Bronn, H.G. (1860) Die Klassen und Ordnungen der Strahlenthiere (Actinozoa) wissenschaftlichdargestellt. In: Die Klassen und Ordnungen des Thier-Reichs, wissenschaftlichdargestellt in Wort und Bild. Zweiter Band. Aktinozoen. C.F. Winter, Leipzig & Heidelberg, pp. 1–434, pls. 1–48. https://doi.org/10.5962/bhl.title.11639
  4. Burmeister, H. (1837) Handbuch der Naturgeschichte. Zum Gebrauch bei Vorlesungen. Zweite Abtheilung, Zoologie. T.C.F. Enslin, Berlin, 489 pp. [pp. 369–858] https://doi.org/10.5962/bhl.title.100177
  5. Deichmann, E. (1958) The Holothurioidea collected by the Velero III and IV during the years 1932 to 1954. Part II. Aspidochirota. Allan Hancock Pacific Expeditions, 11 (2), 249–349.
  6. Grube, A.E. (1840) Actinien, Echinodermen und Würmer des Adriatischen- und Mittelmeer snacheigenen Sammlungenbeschrieben. J.H. Bon, Königsberg, 92 pp., 12 figs. https://doi.org/10.5962/bhl.title.10133
  7. Kawaida, S., Yamana, Y., Tanita, I. & Nanjo, K. (2023) First record of the sea cucumber Holothuria (Selenkothuria) erinaceus Semper, 1868 (Holothuroidea: Holothuriida: Holothuriidae) from a Japanese mangrove forest. Laguna, 30, 61–70.
  8. Miller, A.K., Kerr, A.M., Paulay, G., Reich, M., Wilson, N.G., Carvajal, J.I. & Rouse, G.W. (2017) Molecular phylogeny of extant Holothuroidea (Echinodermata). MolecularPhylogenetics and Evolution, 111, 110–131. https://doi.org/10.1016/j.ympev.2017.02.014
  9. Mongiardino Koch N, Tilic E, Miller AK, Stiller J, Rouse GW (2023) Confusion will be my epitaph: genome-scale discordance stifles phylogenetic resolution of Holothuroidea. Proceedings of the Royal Society B: Biological Sciences, 290, 20230988. https://doi.org/10.1098/rspb.2023.0988.
  10. Panning, A. (1949) VersucheinerNeuordnung der FamilieCucumariidae (Holothurioidea, Dendrochirota). Zoologische jahrbücher, Abteilung für Systematik, Ökologie und Geographie der Tiere, 78 (4), 404–470.
  11. Pearson, J. (1903) Report on the Holothuroidea collected by Prof. Herdman, at Ceylon, in 1902. Report to the Government of Ceylon on the Pearl Oyster Fisheries of the Gulf of Manaar, Supplement 5 (1), 181–208, pls. 1–3. [only mentioned as authorithy of H. serratidens]
  12. Rowe, F.W.E. (1969) A review of the family Holothuriidae (Holothuroidea: Aspidochirotida). Bulletin British Museum natural History, Zoology, 18, 119–170. https://doi.org/10.5962/bhl.part.18419
  13. Rowe, F.W.E. & Doty, J.E. (1977) The shallow-water holothurians of Guam. Micronesica, 13, 217–250.
  14. Selenka, E. (1867) Beiträge zur anatomie und systematik der holothurien. Zeitschrift für wissenschaftliche Zoologie, 17, 291–374.
  15. Semper, C. (1868) Holothurien Reisen in Archipel der Philippinen. 2. Wissenschaftliche Reslultate. W. Engelmann, Leipzig. [unknown pagination] https://doi.org/10.5962/bhl.title.11687
  16. Smirnov, A.V. (2012) System of the Class Holothuroidea. Paleontological Journal, 46, 793–832. https://doi.org/10.1134/S0031030112080126
  17. Thandar, A.S. (1987) The southern African stichopodid holothurians, with notes on the changes in spicule composition with age in the endemic Neostichopus grammatus (H.L. Clark). South African Journal of Zoology, 22, 278–286. https://doi.org/10.1080/02541858.1987.11448058
  18. Thandar, A.S. (1990) The phyllophorid holothurians of southern Africa with the erection of a new genus. South African Journal of Zoology, 25 (4), 207–223. https://doi.org/10.1080/02541858.1990.11448215
  19. Thandar, A.S. (2007) Additions to the aspidochirotid, molpadid and apodid holothuroids (Echinodermata: Holothuroidea) from the east coast of southern Africa, with descriptions of new species. Zootaxa, 1414 (1), 1–62. https://doi.org/10.11646/zootaxa.1414.1.1
  20. Thandar, A.S. (2017) Two new subfamilies, three new species and a new subspecies of dendrochirotid sea cucumbers (Echinodermata: Holothuroidea). Zootaxa, 4365 (4), 410–420. https://doi.org/10.11646/zootaxa.4365.4.2
  21. Utzeri, V.J., Ribani, A., Bovo, S., Taurisano, V., Calassanzio, M., Baldo, D. & Fontanesi, L. (2020) Microscopic ossicle analyses and the complete mitochondrial genome sequence of Holothuria (Roweothuria) polii (Echinodermata; Holothuroidea) provide new information to support the phylogenetic positioning of this sea cucumber species. Marine Genomics, 51, 100735. https://doi.org/10.1016/j.margen.2019.100735
  22. Yang, F., Zhou, C., Tran, N.T., Sun, Z., Wu, J., Ge, H., Lu, Z., Zhong, C., Zhu, Z., Yang, Q. & Lin, Q. (2020) Comparison of the complete mitochondrial genome of Phyllophorus liuwutiensis (Echinodermata: Holothuroidea: Phyllophoridae) to that of other sea cucumbers. FEBS Open Bio, 10 (8), 1587–1600. https://doi.org/10.1002/2211-5463.12914

How to Cite

Ahmed, Q., Thandar, A.S., Ali, Q.M. & Shaikh, I. (2026) Actinopyga atypica sp. nov. plus two new holothuroid records from the coastal waters of Pakistan (Echinodermata: Holothuroidea). Zootaxa, 5750 (3), 387–399. https://doi.org/10.11646/zootaxa.5750.3.4