Heterocepon marginatum Shiino 1936
- 1. Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (United States); and Division of Invertebrate Zoology, American Museum of Natural History, 200 Central Park West, New York, NY, 10024 (United States) cboyko @ amnh. org (corresponding author)
- 2. Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (United States) jason. d. williams @ hofstra. edu
Description
Heterocepon marginatum Shiino, 1936
(Figs 1; 2)
Heterocepon marginatum Shiino, 1936a: 161, 165-168, fig. 2 [ex Pinnotheres parvulus Stimpson, 1858, Japan]; 1936c: 185 [ex P. parvulus, Japan]; 1972: 9 [list]. — Morita 1940: 76-77 [ex Pinnotheres sp., Japan]; 1949: 13-14, figs A-E [ex Nepinnotheres cardii (Bürger, 1895), Japan; description of cryptoniscus larva]; 1951: 48 [ex N. cardii, Japan]; 1952: 54-59, figs 1-3; 1953a: 10, 13 [ex N. cardii, Japan; 1953b: 14-20, figs 1-4 [ex N. cardii, Japan; description of epicaridium larva, bopyridium, juvenile male and female]; 1955: 53-59 [ex N. cardii, Japan; fig. 1-5]. — Danforth 1963: 8 [list]. — Wells & Wells 1966: 57 [mention]. — Janssen & Brandt 1994: 12-17, 24, table 1, figs 3-9 [ex Arcotheres palaensis (Bürger, 1895), Philippines]. — Saito et al. 2000: 42 [list]. — Boyko & Williams 2001: 656 [mention]. — Miura et al. 2014: 31, 35, 36 [mention]. — Ozeki et al. 2014: 49 [mention]. — Williams et al. 2023: 532 [list], 539 [mention].
“bopyrid isopod” – Janssen 1986: 15, 23, fig. 5 [ex A. palaensis, Philippines].
“hyperparasite” – Janssen 1986: 18 [ex A. palaensis, Philippines].
“bopyrid”– Ahyong & Ng 2007: 200 [ex A. palaensis, paralectotype female (SMF-ZMG948b), Palau; photographs examined herein]. — Ng & Ahyong 2022: 145 [ex ZRC 1987.537-539; specimen examined herein], 148 [ex ZRC 1993.120-122; host examined herein], 195 [ex ZRC 2013.1416; specimens examined herein].
“unidentified bopyrids” [of Arcotheres palaensis (in part) and Arcotheres rayi] – Williams et al. 2023: 533 [list].
MATERIAL EXAMINED. — Peninsular Malaysia or Singapore • 1 ovigerous ♀ (4.5 mm TL), 1 mature ♂ (3.0 mm TL), from left branchial chamber of female Arcotheres palaensis (Bürger, 1895) (5.7 mm CL, 9.6 mm CW; ZRC 1987.537-539), ex Tegillarca granosa (Linnaeus, 1758) (Arcidae); from markets; 20.XI.1986; P. K. L. Ng, leg.; ZRC 2023.0257.
Malaysia • 1 mature ♀ (3.5 mm), 1 mature ♂ (1.8 mm), from right branchial chamber of female Arcotheres rayi Ahyong & Ng, 2007 (5.0 mm CL, 7.0 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0262 • 1 mature ♀ (3.2 mm), mature ♂ (2.8 mm), from left branchial chamber of female A. rayi (4.9 mm CL, 8.0 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0263 • 1 ovigerous ♀ (3.4 mm), 1 mature ♂ (2.6 mm), from right branchial chamber of female A. rayi (5.0 mm CL, 7.5 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0264 • 1 ovigerous ♀ (3.6 mm), 1 mature ♂ (3.2 mm), from right branchial chamber of female A. rayi (4.9 mm CL, 8.0 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0265 • 1 immature ♀ (2.5 mm), from left branchial chamber of female A. rayi (3.8 mm CL, 5.7 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0266 • 1 ovigerous ♀ (4.0 mm), 1 mature ♂ (2.9 mm), from right branchial chamber of female A. rayi (5.0 mm CL, 8.5 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae Rafinesque, 1815); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0267 • 1 ovigerous ♀ (4.2 mm), 1 mature ♂ (3.5 mm), from left branchial chamber of female A. rayi (6.0 mm CL, 10.0 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0269 • 1 ovigerous ♀ (3.6 mm), 1 mature ♂ (2.8 mm), from left branchial chamber of female A. rayi (4.7 mm CL, 8.0 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0270 • 1 ovigerous ♀ (3.6 mm), 1 mature ♂ (2.8 mm), from left branchial chamber of female A. rayi (4.6 mm CL, 8.0 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0271 • 1 ovigerous ♀ (3.0 mm), 1 mature ♂ (2.8 mm), 1 immature ♂ (1.0 mm), from right branchial chamber of female A. rayi (4.7 mm CL, 7.3 mm CW; ZRC 2013.1416), ex Paphia sp. (Veneridae); Pahang, Bentong Market; 10.V.2010; M. Low leg.; ZRC 2023.0272.
“ Singapore? ” • 1 ovigerous ♀ A. palaensis (7.1 mm CL, 9.0 mm CW; with swollen empty right branchial chamber), ex T. granosa; market; 8.XII.1987; P. K. L. Ng leg.; ZRC 1993.120-122.
REMARKS
This is the first record of the species from Malaysia and likely Singapore based on the host branchial chamber swelling; however, because some specimens were obtained from markets where field sites were not noted, the country of origin remains unclear for some of the museum lots. The female (Figs 1A, D; 2) and male (Fig. 1B) specimens match the original description. An additional parasitized ovigerous female Arcotheres palaensis (ZRC 1993.120-122) was examined but the swollen branchial chamber was empty. In light of the identity of the host, the bopyrid was probably H. marginatum.
In situ photographs of a female specimen in a host Arcotheres palaensis (SMF-ZMG 948b) (Fig. 1C) and the extracted female (Fig. 1 D) were examined. The female bopyrid identity was confirmed, but no male was present.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Bopyridae
- Genus
- Heterocepon
- Kingdom
- Animalia
- Order
- Isopoda
- Phylum
- Arthropoda
- Scientific name authorship
- Shiino
- Species
- marginatum
- Taxon rank
- species
- Taxonomic concept label
- Heterocepon marginatum Shiino, 1936 sec. Boyko & Williams, 2024
References
- SHIINO S. M. 1936 a. - Bopyrids from Shimoda and other districts. Records of Oceanographic Works in Japan 8 (1): 161 - 176.
- MORITA S. 1940. - kkrgn (Pinnotheres Sp.) tsrn 寄生s r Bopyrid n 一種 (Heterocepon marginatum Shiino) n 就 nt nLin 観ª. Botany and Zoology 8 (7): 76 - 80.
- DANFORTH C. G. 1963. - Bopyridian (Crustacea, Isopoda) Parasites Found in the Eastern Pacific of the United States. Ph. D. Dissertation, Oregon State University, 110 p.
- WELLS M. J. & WELLS H. W. 1966. - Dactylokepon hunterae and Bopyrina pontoniae, two new species of bopyrid isopods from North Carolina. Crustaceana 11 (1): 53 - 60. https: // doi. org / 10.1163 / 156854066 X 00441
- JANSSEN H. H. & BRANDT A. 1994. - Heterocepon marginatum Shiino, 1936, (Crustacea: Isopoda: Epicaridea: Bopyridae) a new hyperparasite from the Philippines, and a short review of the biology of the Bopyridae. The Philippine Scientist 31: 5 - 31.
- SAITO N., ITANI G. & NUNOMURA N. 2000. - A preliminary check-list of isopod crustaceans in Japan. Bulletin of the Toyama Science Museum 23: 1 - 107.
- BOYKO C. B. & WILLIAMS J. D. 2001. - A review of Pseudionella Shiino, 1949 (Crustacea: Isopoda: Bopyridae), with the description of a new species parasitic on Calcinus hermit crabs from Easter Island. Proceedings of the Biological Society of Washington 114 (3): 649 - 659.
- MIURA T., UTSUNOMIYA M., KITASHIMA Y. & TOMIOKA H. 2014. - First record on the bopyrid isopods, parasitic on marine crustaceans collected from Miyazaki Prefecture, Japan (preliminary report). Bulletin of the Faculty of Agriculture, University of Miyazaki 60: 29 - 39.
- OZEKI S., TOMIOKA H. & MIURA T. 2014. - Life cycle of the pea crab Pinnotheres bidentatus living in Hitotsuba Inlet, east coast of Kyushu, Japan. Japanese Journal of Benthology 69: 40 - 50. https: // doi. org / 10.5179 / benthos. 69.40
- WILLIAMS J. D., BOYKO C. B. & TRI N. V. 2023. - Description of a new genus and species of bopyrid (Isopoda: Epicaridea: Bopyridae) from the pinnotherid crab Plenotheres coarctatus (Burger, 1895) associated with mangrove clams from Vietnam. Raffles Bulletin of Zoology 71: 531 - 541. https: // doi. org / 10.26107 / RBZ- 2023 - 0040
- JANSSEN H. H. 1986. - Some notes on Philippine Pinnotheridae (Crustacea: Brachyura). The Philippine Scientist 23: 15 - 30.
- AHYONG S. T. & NG P. K. L. 2007. - The pinnotherid type material of Semper (1880), Nauck (1880) and Burger (1895) (Crustacea: Decapoda: Brachyura). Raffles Bulletin of Zoology Supplement 16: 191 - 226.
- NG P. K. L. & AHYONG S. T. 2022. - The pea crab genus Arcotheres Manning, 1993 (Crustacea: Brachyura: Pinnotheridae) from Singapore and Peninsular Malaysia, with a reappraisal of diagnostic characters and descriptions of two new genera. Raffles Bulletin of Zoology 70: 134 - 248. https: // doi. org / 10.26107 / RBZ- 2022 - 0009
- RAFINESQUE C. S. 1815. - Analyse de la nature ou Tableau de l'univers et des corps organises. Palerme, 224 p. https: // doi. org / 10.5962 / bhl. title. 106607