Cypricercus inermis ( Brady, 1904 )

Nagler, Christina, Geist, Juergen & Matzke-Karasz, Renate, 2014, Revision of the genus Tanycypris (Ostracoda, Cypricercinae) with the description of Tanycypris alfonsi n. sp., and an identification key to the genus, Zootaxa 3821 (4), pp. 401-424 : 417

publication ID

https://doi.org/ 10.11646/zootaxa.3821.4.1

publication LSID

lsid:zoobank.org:pub:E2792744-6620-40DA-83C7-7BC92E3B302C

persistent identifier

https://treatment.plazi.org/id/1231A341-540A-2E66-1DBB-CE0BFBABCCD4

treatment provided by

Felipe (2021-06-09 21:26:49, last updated 2024-11-24 20:31:44)

scientific name

Cypricercus inermis ( Brady, 1904 )
status

 

Cypricercus inermis ( Brady, 1904) View in CoL

* 1904 Cypris inermis Brady : 125, pl. VIII. figs 44–49.

1910 Eucypris inermis —Daday: 167–169, pl. 9. figs 18–33.

1971 Tanycypris inermis —McKenzie: 172, 208.

2001 Cypricercus cuneatus —Martens: 62–64, 70.

2009b Cypricercus inermis — Savatenalinton & Martens: 2.

Diagnosis. L = 0.97–1.11 mm; H = 0.45–0.47; carapace in lateral view elongated. Length = 2.4 times height. Valves greyish-white. LV overlapping RV ventrally, LV longer than RV anteriorly, RV longer than LV posteriorly. Valve surface with shallow pits and thin setae. A1 with small Rome organ. T1 with a-, b- and d-seta.T2 with d1, which is twice as long as d2. CR stout with four groups of setulae on the ventral margin. CR attachment with Triebel loop in the middle, and a long, well developed vb ( Brady 1904; Savatenalinton & Martens 2009b). Hemipenis with triangular lateral shield and rounded distal and medial shields. Zenker organ long with 22 chitinous rosettes (for more details see Savatenalinton & Martens 2009b).

History. Brady (1904) named this species Cypris inermis and provided its first description. Daday (1910) transferred the species to the genus Eucypris . McKenzie (1971) reported the existence of Tanycypris inermis , which he found in a “small clear pool, formed by drippings of a spring in the near of (sic) Rydal Mount, Witsieshoek, Orange Free State ”. Martens (2001) transferred it to Cypricercus under the assumption of synonymy with Cypricercus cuneatus , a view, that was not followed in Savatenalinton & Martens (2009b), where Cypricercus inermis and Cypricercus cuneatus were treated as two separate species, which “can be distinguished from it [ C. cuneatus ] by the appearance of the unequal posterior valve margins, by the features of the caudal ramus and attachment and by the morphology of the hemipenis and the Zenker’s organ“ ( Savatenalinton & Martens 2009b).

Conclusion. This species differs from Tanycypris in the presence of a well-developed vb and of a long groove in LV in C. inermis . The width of the carapace is greater than one-third of the length in C. inermis and thus greater than in the genus Tanycypris ( Martens 2001; Savatenalinton & Martens 2009b).

Brady, G. W. (1904) On Entomostraca collected in Natal by J. Gibson. Proceedings of the Zoological Society of London, 1904 121 - 128. http: // dx. doi. org / 10.1111 / j. 1469 - 7998.1904. tb 08317. x

Daday, E. (1910) Die Susswasser-Mikrofauna Deutsch-Ost-Afrikas Lieferung 3. Zoologica Original-Abhandlungen aus dem Gesamtgebiete der Zoologie, 23, 113 - 176.

Martens, K. (2001) Ostracoda. In: Day, J., de Moor, I., Stewart, B. & Louw, A. (Eds.), Freshwater Invertebrates of Southern Africa. Vol. 3. Crustacea II Ostracoda, Copepoda & Branchiura. Water Research Commission, Pretoria, South Africa, 9 - 77.

McKenzie, K. G. (1971) Species List of South African freshwater Ostracoda with an appendix listing museum collections and some further determinations. Annals of the South African Museum, 57, 157 - 213.

Savatenalinton, S. & Martens, K. (2009 b) Redescription of the type species of Strandesia Stuhlmann, 1888 and Cypricercus Sars, 1895 (Crustacea, Ostracoda, Cypricercinae), with a description of a new species of Cypricercus from South Africa. Zootaxa, 2007, 1 - 42.

Kingdom

Animalia

Phylum

Arthropoda

Class

Ostracoda

SubClass

Podocopa

Order

Podocopida

SubOrder

Podocopina

SuperFamily

Cypridoidea

Family

Cyprididae

SubFamily

Cypricercinae

Tribe

Cypricercini

Genus

Cypricercus