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| Cryptione grandis sp. nov. from Notostomus gibbosus Williams, Horch, Ceballos & Bracken-Grissom, 2024 |
Abstract
A new species of pseudionine parasite is described from the deep-sea shrimp Notostomus gibbosus A. Milne-Edwards, 1881, collected in the Gulf of Mexico, the first record of a bopyrid parasitizing any member of the family Acanthephyridae Spence Bate, 1888. Morphological and molecular data are provided to support the inclusion of the new species and 12 other branchial ectoparasites of caridean shrimps in the genus Cryptione Hansen, 1897 that is resurrected herein. Cryptione is sister to the genus Pseudione sensu stricto, ectoparasites of axiid and callianassid shrimps as well as nephropid lobsters. The new species Cryptione grandis can be distinguished from its closest congeners including C. parviramus (Adkison, 1988) from the Gulf of Mexico by several female and male characters. The epicaridium larvae of C. grandis were examined with scanning electron microscopy (SEM), only the second description of this stage for any species in the genus. A table listing all species in Cryptione and taxonomic notes on some species are provided.
Keywords: Bopyrid, Ectoparasite, Epicaridium larva, New species, Pseudioninae
Systematics
Order Isopoda Latreille, 1816
Suborder Epicaridea Latreille, 1825
Superfamily Bopyroidea Rafinesque, 1815
Family Bopyridae Rafinesque, 1815
Subfamily Pseudioninae Codreanu, 1967
Cryptione Hansen, 1897
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| Cryptione grandis sp. nov. from Notostomus gibbosus (a–d female holotype (USNM 1716194); e male allotype (USNM 1716195)). a Lateral view of N. gibbosus with C. grandis sp. nov. extending from right branchial chamber (ventral view of female with larvae in brood chamber shown); b lateral view of N. gibbosus with C. grandis sp. nov. removed and positioned dorsal side up (male attached to posterior pleon, shown with arrow); c female dorsal view; d female ventral view; e male dorsal view. Scale bars: a–d = 5 mm; e = 1.5 mm |
Cryptione grandis sp. nov.
Etymology: The species epithet grandis is Latin for large or great, denoting the size of the female parasite.
Type locality: Northern Gulf of Mexico ...; type host: Notostomus gibbosus.
Jason D. Williams, Amanda P. Horch, Angela Ceballos and Heather Bracken-Grissom. 2024. Resurrection of the parasitic isopod genus Cryptione Hansen, 1897 (Epicaridea: Bopyridae) and Description of A New Species of parasitic isopod (Epicaridea: Bopyridae) from the deep-sea shrimp Notostomus gibbosus (Caridea: Acanthephyridae) with an analysis of its phylogenetic position based on molecular data. Marine Biodiversity. 54, 86. DOI: doi.org/10.1007/s12526-024-01475-z
