Platysympus Stebbing, 1912

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 134-135

publication ID	https://doi.org/10.11646/zootaxa.4428.1.1
publication LSID	lsid:zoobank.org:pub:2419A7F0-5AED-47EC-86BB-06AADB2A4BD9
DOI	https://doi.org/10.5281/zenodo.3799236
persistent identifier	https://treatment.plazi.org/id/03FD87BA-FF69-2EAD-64FF-FA11D6AECB2B
treatment provided by	Plazi (2020-04-27 15:09:12, last updated 2024-11-24 23:08:52)
scientific name	Platysympus Stebbing, 1912
status

Treatment

Platysympus Stebbing, 1912 View in CoL

Platysympus Stebbing, 1912: 143–144 View in CoL .

Platyaspis View in CoL .— Sars, 1870: 158.

Type species. Platyaspis typicus Sars, 1870 , by monotypy and original designation.

Diagnosis. Carapace dorsoventrally flattened, marginal carina present, eyelobe present, pseudorostral lobes short, blunt. Antennule flagella well developed, accessory flagellum at least 0.5 length of main flagellum. Mandible navicular. Maxillule palp absent. Pereopod 1 slender. Pereopod 5 longer than pereopod 4 basis. Telson less than 2/3 length of uropod peduncles. Uropod endopod of 3 articles. Uropod exopod article 1 0.2 length of article 2, or less. Female with rudimentary or absent exopod on pereopod 2, rudimentary or absent exopods on pereopods 3–4, without pleopods. Male with short antenna, not extending past pereon, without penial lobes, with 3 pairs of pleopods.

Species. Platysympus brachyurus ( Zimmer, 1907) , P. camelus Day, 1978 , P. compressus Day, 1978 , P. depressus Day, 1978 , P.japonicus Gamô, 1975 , P. muranoi Gamô, 1980 , P. ovalis Gamô, 1987 , P. pacificus Corbera, 2006 , P. phylloides Day, 1978 , P. quadrangulatus Gamô, 1987 , P. tricarinatus Hansen, 1920 , P. typicus ( Sars, 1870) .

Remarks. The most similar genera to Platysympus are Aplatysympus and Paraplatysympus , which are differentiated by the state of the maxillule palp and pereopod 5. In Aplatysympus pereopod 5 is longer than the pereopod 4 basis, as in Platysympus , but the maxillule palp is present and bears 2 setae. In Paraplatysympus the maxillule palp is present and bears 2 setae, and pereopod 5 is shorter than the basis of pereopod 4.

References

Corbera, J. (2006) Lampropidae (Crustacea, Peracarida, Cumacea) from deep waters of New Caledonia. Memoires du Museum d'Histoire Naturelle, 193, 143 - 162.

Day, J. (1978) South African Cumacea, Part 3: Families Lampropidae and Ceratocumatidae. Annals of the South African Museum, 76, 137 - 189.

Gamo, S. (1975) A new cumacean Crustacea, Hemilamprops bigibba sp. n. from Sagami Bay. Seto Marine Biological Laboratory, 22, 229 - 235. https: // doi. org / 10.5134 / 175904

Gamo, S. (1980) Platysympus muranoi sp. n. (Cumacea, Crustacea) from Japan. Yokohama National University. Yokohama National University, 27, 1 - 6.

Gamo, S. (1987) Two new cumacean crustaceans, Platysympus ovalis sp. n. and P. quadrangulatus sp. n. from Surga Bay. Yokohama National University, 34, 1 - 14.

Hansen, H. J. (1920) The Danish Ingolf Expedition. Crustacea Malacostraca 4. Zoological Museum of Copenhagen University, 3, 1 - 86.

Sars, G. O. (1870) Beskrivelse af de paa fregatten josephines expedition fundne Cumaceer. Kuncl Svenska Vetenskaps Akademiens Handlingar, 9, 3 - 57.

Stebbing, T. R. R. (1912) The Sympoda, Part 6. Annals of the South African Museum, 10, 129 - 176.

Zimmer, C. (1907) Neue Cumaceen von der Deutschen und der Swedischen Sudpolar Expedition aus der Familien der Cumiden, Vaunthomsoniiden, Nannastaciden und Lampropiden. Zoologischer Anzeiger, 31, 367 - 374.