A new species and depth record of bopyrid (Crustacea, Isopoda) from a squat lobster in the Kuril-Kamchatka Trench

  • Jason D. Williams Department of Biology, Hofstra University, Hempstead, New York 11549, USA
  • Christopher B. Boyko Department of Biology, Hofstra University, Hempstead, New York 11549, USA
  • Ivan N. Marin A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
Keywords: Ectoparasite, Epicaridea, Pleurocryptella, NW Pacific, Munidopsis


The branchial parasitic isopod Pleurocryptella altalis sp. nov. (Bopyridae: Pseudioninae) is described from the squat lobster host Munidopsis petalorhyncha Baba, 2005. The new species is morphologically similar to Pleurocryptella formosa Bonnier, 1900 and P. wolffi Bourdon, 1972b but can be distinguished based on male characters (differences in head, pleon and uropods) and female characters (differences in barbula, pleopods and pleotelson). The parasite specimens (a female and male pair) were collected with the squat lobster host at a depth of 5060–5130 m from the Kuril-Kamchatka Trench, representing the deepest record for any of the 850+ described bopyrid isopod species and for any record of an infested host. Dichotomous identification keys to females and males of Pleurocryptella species and subspecies are provided.


Baba K. 2005. Deep-sea chirostylid and galatheid crustaceans (Decapoda: Anomura) from the Indo-Pacific, with a list of species. Galathea Report 20: 1–317.

Barnard K.H. 1920. Contributions to the crustacean fauna of South Africa. No. 6. Further additions to the list of marine Isopoda. Annals of the South African Museum 17: 319–348. https://doi.org/10.5962/bhl.part.22318

Birstein Y.A. & Zarenkov N.A. 1970. Bottom decapods (Crustacea Decapoda) of the Kurile-Kamchatka Trench area. Akademiya Nauk SSSR. Trudy Instituta Okeanologii im P.P. Shirshova 86: 420–426. [In Russian.]

Birstein Y.A. & Zarenkov N.A. 1972. Bottom decapods (Crustacea Decapoda) of the Kurile-Kamchatka Trench area. In: Bogorov V.G. (ed.) Fauna of the Kurile-Kamchatka Trench and its Environment based on Data of the 39th Cruise of the R/V “Vityaz”. Akadamiya Nauk SSSR, Trudy Instituta Okeanologii im P.P. Shirshova 86: 439–447. Israel Program for Scientific Translation, Jerusalem. [Note that “Birshtein” is consistently used in this paper, but is an alternate transliteration from the Russian “Бирштейн”; we use “Birstein” as found in his other publications, although the name should actually be “Birštein” with the appropriate diacritical mark.]

Bonnier J. 1900. Contribution à l’étude des épicarides. Les Bopyridae. Travaux de la Station zoologique de Wimereux 8: 1–476. https://doi.org/10.5962/bhl.title.10522

Bourdon R. 1972a. Sur quelques Bopyridae (Crustacea, Isopoda) parasites de galathéides. Bulletin du Muséum national d’histoire naturelle, 3e Série 66 (Zoologie 52): 817–838. Available from https://www.biodiversitylibrary.org/part/272602 [accessed 17 Nov. 2020].

Bourdon R. 1972b. Epicarides de la Galathea Expedition. Galathea Report 12: 101–112.

Bourdon R. 1976. Épicarides de Madagascar. I. Bulletin du Muséum national d’histoire naturelle, 3e Série 371 (Zoologie 259): 353–392. Available from https://www.biodiversitylibrary.org/part/280629 [accessed 24 Nov. 2020].

Bourdon R. 1979. Bopyridae de la campagne Biaçores (Isopoda Epicaridea). Bulletin du Muséum national d’histoire naturelle, 4e Série 1 (A(2)): 507–512. Available from https://www.biodiversitylibrary.org/part/283205 [accessed 17 Nov. 2020].

Bourdon R. 1981. Bopyriens nouveaux pour la faune Européenne de l’Atlantique (Isopoda Epicaridea). Bulletin du Muséum national d’histoire naturelle, 4e Série, 3 (A(2)): 615–634. Available from https://www.biodiversitylibrary.org/part/285839 [accessed 24 Nov. 2020].

Boyko C.B. & Williams J.D. 2009. Crustacean parasites as phylogenetic indicators in decapod evolution. In: Martin J.W., Crandall K.A. & Felder D.L. (eds) Crustacean Issues 18. Decapod Crustacean Phylo-genetics: 197–220. CRC Press, Boca Raton. https://doi.org/10.1201/9781420092592

Boyko C.B. & Williams J.D. 2010. A new genus and species of primitive bopyrid (Isopoda, Bopyridae) parasitizing hermit crabs (Anomura) from deep waters in the eastern Atlantic and Japan. In: Fransen C.H.J.M., de Grave S. & Ng P.K.L. (eds) Crustacean Monographs 14. Studies on Malocostraca: Lipke Bijdeley Holthuis Memorial Volume: 145–157. Brill, Leiden. https://doi.org/10.1163/9789047427759_007

Boyko C.B., Bruce N.L., Hadfield K.A., Merrin K.L., Ota Y., Poore G.C.B., Taiti S., Schotte M. & Wilson G.D.F. (eds). 2008 onwards. World Marine, Freshwater and Terrestrial Isopod Crustaceans database. Pleurocryptella Bonnier, 1900. Available from http://www.marinespecies.org/aphia.php?p=taxdetails&id=118183 [accessed 23 Jun. 2020].

Boyko C.B., Williams J.D. & Markham J.C. 2012. Recent and fossil Isopoda Bopyridae parasitic on squat lobsters and porcelain crabs (Crustacea: Anomura: Chirostyloidea and Galatheoidea), with notes on nomenclature and biogeography. Zootaxa 3150: 1–35. https://doi.org/10.11646/zootaxa.3150.1.1

Boyko C.B., Moss J., Williams J.D. & Shields J.D. 2013. A molecular phylogeny of Bopyroidea and Cryptoniscoidea (Crustacea: Isopoda). Systematics and Biodiversity 11: 495–506. https://doi.org/10.1080/14772000.2013.865679

Brusca R.C. & Wilson G.D.F. 1991. A phylogenetic analysis of the Isopoda with some classificatory recommendations. Memoirs of the Queensland Museum 31: 143–204. Available from https://www.biodiversitylibrary.org/part/97765 [accessed 17 Nov. 2020].

Codreanu R. 1967. Clasificarea evolutiva a bopirienilor, isopode parazite ale crustaceelor decapode si importanta lor biologica generala. Studii si Cercetari de Biologie Seria Zoologie 19: 203–211.

Komai T., Marin I. & Kakui K. 2017. Rediscovery and redescription of the abyssal squat lobster Munidopsis petalorhyncha Baba, 2005 (Crustacea: Decapoda: Munidopsidae) from the Northwest Pacific. Zootaxa 4226: 93–102. https://doi.org/10.11646/zootaxa.4226.1.4

Kossmann R. 1881. Studien über Bopyriden. Zeitschrift für Wissenschaftliche Zoologie 35: 652–680.

Latreille [P.A.] 1817. Les Crustacés, les Arachnides et les Insectes. In: Cuvier G. (ed.) Le Règne Animal distribué d’après son Organisation, pour servir de Base à l’Histoire naturelle des Animaux et d’Introduction à l’Anatomie comparée. Vol. 3: 1–653. Deterville, Paris. Available from https://www.biodiversitylibrary.org/page/28833400 [accessed 18 Nov. 2020].

Marin I. 2020. Northern unicorns of the depths: diversity of the genus Munidopsis Whiteaves, 1874 (Decapoda: Anomura: Munidopsidae) in the northwestern Pacific Ocean, with descriptions of three new species along the Russian coast. Progress in Oceanography 183: 102263. https://doi.org/10.1016/j.pocean.2020.102263

Markham J.C. 1974. Six new species of bopyrid isopods parasitic on galatheid crabs of the genus Munida in the western Atlantic. Bulletin of Marine Science 23: 613–648.

Markham J.C. 1986. Evolution and zoogeography of the Isopoda Bopyridae, parasites of Crustacea Decapoda. In: Gore R.H. & Heck K.L. (eds) Crustacean Issues 4. Crustacean Biogeography: 143–164. A.A. Balkema, Rotterdam. https://doi.org/10.1201/9781315140674-7

Nierstrasz H.F. & Brender à Brandis G.A. 1923. Die Isopoden der Siboga-Expedition. II. Isopoda genuina. I. Epicaridea. Siboga-Expeditie 32b: 57–121.

Nierstrasz H.F. & Brender à Brandis G.A. 1931. Papers from Dr. Th. Mortensen’s Pacific Expedition 1914-16. LVII. Epicaridea II. Videnskabelige Meddedelser fra den Dansk Naturhistoriske Forening i København 91: 147–226.

Pielou E.C. 1974. Biogeographic range comparisons and evidence of geographic variation in host-parasite relations. Ecology 55: 1359–1367. https://doi.org/10.2307/1935463

Rafinesque C.S. 1815. Analyse de la Nature ou Tableau de l’Univers et des Corps organisés. Self published, Palermo. https://doi.org/10.5962/bhl.title.106607

Richardson H. 1910. Marine isopods collected in the Philippines by the U.S. Fisheries steamer Albatross in 1907–8. Bureau of Fisheries Document 736: 1–44. https://doi.org/10.5962/bhl.title.82673

Román-Contreras R. 2008. A new genus of bopyrid isopod infesting Munidopsis beringana (Decapoda: Galatheidae) from deep waters. Journal of Crustacean Biology 28: 378–384. https://doi.org/10.1163/20021975-99990383

Shiino S.M. 1937. Some additions to the bopyrid fauna of Japan. Annotationes Zoologicae Japonenses 16: 293–300.

Shiino S.M. 1965. Phylogeny of the genera within the family Bopyridae. Bulletin du Muséum national d’histoire naturelle, Série 2 37: 462–465.

How to Cite
Williams, J. D., Boyko, C. B., & Marin, I. N. (2020). A new species and depth record of bopyrid (Crustacea, Isopoda) from a squat lobster in the Kuril-Kamchatka Trench. European Journal of Taxonomy, 724(1), 122-133. https://doi.org/10.5852/ejt.2020.724.1165
Research article