Cypricercus

Savatenalinton, Sukonthip & Martens, Koen, 2009, 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, pp. 1-42 : 33-35

publication ID

https://doi.org/ 10.5281/zenodo.185703

DOI

https://doi.org/10.5281/zenodo.5662561

persistent identifier

https://treatment.plazi.org/id/B5606078-FFC2-5326-28F4-FA5CFC38F81D

treatment provided by

Plazi

scientific name

Cypricercus
status

 

Taxonomy of Cypricercus View in CoL

Cypricercus View in CoL presently comprises 22 nominal species. These were reexamined here based on (type) materials and on literature descriptions and nine species were retained in Cypricercus View in CoL s.s. ( Table 2). All other species belong to other genera or have an unknown status. Cypricercus mongolicus Daday (1909) is here transferred to the genus Eucypris View in CoL ( Table 3), relying mainly on the morphology of caudal ramus and hemipenis.

Cypricercus salinus De Deckker, 1981 View in CoL was described from a saline lake (salinity range 0.34-12.3 ppt) in Victoria, Australia. The Triebel’s loop of C. salinus View in CoL is equivocally presented in the illustration, maybe because it was not well developed. Indeed, De Deckker (1981) reported that an almost closed eyelet was encountered on dorsal branch. To clarify this enigmatic character, the type material should be reexamined. Based on the position of the Triebel’s loop in dorsal branch, we here allocate C. salinus View in CoL to Bradleystrandesia View in CoL ( Table 3). In addition, this species also shares some other characters of genus Bradleystrandesia View in CoL . Firstly, the distal seta of the caudal ramus is short (considerably shorter than half of the proximal claw). Secondly, the proximal seta is short (somewhat less than the end of the ramus) and its position is comparatively lower than the proximal claw. Thirdly, whereas the insertions of proximal and distal claws in Bradleystrandesia View in CoL are slightly apart from each other, in other Cypricercinae View in CoL these insertions are relatively close to each other.

Species Distribution Cypricercus ariariensis ( Roessler, 1986) South America Cypricercus centrurus ( Klie, 1940) South Africa Cypricercus cuneatus Sars, 1895 South Africa Cypricercus episphaenus G.W. Müller, 1908 South Africa Cypricercus inermis ( Brady, 1904) South Africa Cypricercus maculatus G.W. Müller, 1908 South Africa Cypricercus unicornis De Deckker, 1981 View in CoL Australia

Cypricercus variabilis ( Roessler, 1986) South America Cypricercus xhosa sp. nov. South Africa Eucypris mongolica ( Daday, 1909)

Bradleystrandesia salina ( De Deckker, 1981) View in CoL Cypricercus acanthigera ( G.W. Müller, 1912) Syn. View in CoL : Neocypris mucronata Sars, 1901 (senior syn) Syn.: Cypricercus episphaenus sensu Tressler, 1949

Cypricercus adustus ( Koch, 1837)

Cypricercus burlingtonensis ( Turner, 1894)

Cypricercus cheboyganensis Ferguson, 1957

Cypricercus elegans ( Roessler, 1986)

Cypricercus indrani Deb, 1983

Cypricercus munshii Deb & Nasar, 1977

Cypricercus rotundus Tressler, 1950

Cypricercus sanguineus Chapman, 1963

Cypricercus setosus Farkas, 1957

Cypricercus testudinarius ( Sharpe, 1897)

Cypricercus vietsi Farkas, 1957

De Deckker (1981) also described Cypricercus unicornis View in CoL from Newmann’s Rocks in West Australia. His drawing and description illustrated that there is a Triebel’s loop in the dorsal branch. However, this Triebel’s loop seems to be incorrect in shape and position. It is therefore possible that the attachment of the caudal ramus was broken during dissection, resulting in a translocation of Triebel’s loop from main branch to dorsal branch. Additionally, we found that the shape of the caudal ramus and the valve morphology in this species are more conform to Cypricercus View in CoL than to Bradleystrandesia View in CoL . We thus maintain this species in Cypricercus View in CoL .

We here redescribe Cypricercus inermis ( Brady, 1904) and found that the characters of this species, e.g. the divided α-seta on Md-palp, the absence of the channel in the fused zone of LV, elongated carapace and the morphology of Zenker’s organ, are congruent to those of Cypricercus . Martens (2001) considered Cypricercus inermis , previously in Tanycypris , to be a synonym of Cypricercus cuneatus . The present study reveals that C. inermis is not identical to C. cuneatus and differs by the following characters: (1) the lateral shield of the hemipenis in C. inermis is elongated, subtriangular and its distal end is beak-like; in C. cuneatus this shield is subquadrate with bluntly pointed distal end; (2) the Zenker’s organ of C. inermis is slightly longer (length c. 3.5 times the width) and set with approx. 22 spiny whorls, whereas in C. cuneatus this organ is shorter (length c. 3 times the width) and is composed of 20 spiny whorls; (3) the chaetotaxy of the soft parts is also different between both species, for example, in the length of the dorsal subapical seta on the first segment of the A1, the size and shape of the Rome organ, the ventral apical seta on the fifth A1-segment and the morphology of caudal ramus and attachment: in C. inermis the ventral margin of the caudal ramus is composed of 4 groups of fine spines and the ventral branch of the attachment is stout and short, while in C. cuneatus the ventral margin of the caudal ramus is continuously finely serrated and the ventral branch of the attachment is slim and somewhat longer; (4) the carapace of C. inermis is narrower in lateral view, and C. inermis has the posterior margin of the RV slightly more produced than that of C. cuneatus , resulting in a relatively unequal posterior end, as can be clearly seen in dorsal view; (5) the number of inner lists along the anterior part of the LV is different between C. inermis and C. cuneatus , 1 inner list in the former, 2 inner lists in the latter. Therefore, C. inermis is here reinstated as a valid species.

Species Distribution Strandesia bicornuta Hartmann, 1964 Asia

Strandesia bicuspis bicuspis ( Claus, 1892) South America Strandesia bicuspis mucronata ( Claus, 1892) South America Strandesia botosaneanui Broodbakker, 1983 West Indies Strandesia carteri Klie, 1930 South America Strandesia cyprinotoides Klie, 1938 Africa

Strandesia dorsolonga Rome, 1962 Africa

Strandesia evae Gauthier, 1951 Africa

Strandesia ewaldi ( Roessler, 1990) South America Strandesia gopinathani George & Martens, 1993 Asia

Strandesia hancocki (Lowndes, 1931) Africa

Strandesia hartmanni Victor & Fernando, 1981 Asia

Strandesia indica Hartmann, 1964 Asia

Strandesia inornata ( Sars, 1901) South America Strandesia kimberleyi Karanovic, 2005 View in CoL Australia Strandesia labiata Hartmann, 1964 Asia

Strandesia longula Broodbakker, 1983 West Indies Strandesia mercatorum ( Vavra, 1895) Africa

Strandesia odiosa ( Moniez, 1892) Asia

Strandesia perakensis Victor & Fernando, 1981 View in CoL Asia

Strandesia pistrix Broodbakker, 1983 West Indies Strandesia psittacea psittacea ( Sars, 1901) South America Strandesia psittacea colombiensis Roessler, 1990 South America Strandesia sphaeroidea Broodbakker, 1983 West Indies Strandesia stocki Broodbakker, 1983 West Indies Strandesia strandesioides ( G.W.Müller, 1898) Africa

Strandesia trichosa Roessler, 1990 South America Strandesia unicolor Klie, 1944 Africa

Strandesia variegata ( Sars, 1901) View in CoL South America Strandesia vavrai vavrai ( G.W.Müller, 1898) Africa

Strandesia vavrai persica Bronshtein, 1925 Asia

Kingdom

Animalia

Phylum

Arthropoda

Class

Ostracoda

Order

Podocopida

Family

Cyprididae

Loc

Cypricercus

Savatenalinton, Sukonthip & Martens, Koen 2009
2009
Loc

Strandesia kimberleyi

Karanovic 2005
2005
Loc

Strandesia gopinathani

George & Martens 1993
1993
Loc

Strandesia ewaldi (

Roessler 1990
1990
Loc

Strandesia psittacea colombiensis

Roessler 1990
1990
Loc

Strandesia trichosa

Roessler 1990
1990
Loc

Cypricercus ariariensis (

Roessler 1986
1986
Loc

Cypricercus variabilis (

Roessler 1986
1986
Loc

Cypricercus elegans (

Roessler 1986
1986
Loc

Cypricercus indrani

Deb 1983
1983
Loc

Strandesia botosaneanui

Broodbakker 1983
1983
Loc

Strandesia longula

Broodbakker 1983
1983
Loc

Strandesia pistrix

Broodbakker 1983
1983
Loc

Strandesia sphaeroidea

Broodbakker 1983
1983
Loc

Strandesia stocki

Broodbakker 1983
1983
Loc

Cypricercus salinus

De Deckker 1981
1981
Loc

Cypricercus unicornis

De Deckker 1981
1981
Loc

Bradleystrandesia salina (

De Deckker 1981
1981
Loc

Strandesia hartmanni

Victor & Fernando 1981
1981
Loc

Strandesia perakensis

Victor & Fernando 1981
1981
Loc

Cypricercus munshii

Deb & Nasar 1977
1977
Loc

Strandesia indica

Hartmann 1964
1964
Loc

Strandesia labiata

Hartmann 1964
1964
Loc

Cypricercus sanguineus

Chapman 1963
1963
Loc

Strandesia dorsolonga

Rome 1962
1962
Loc

Cypricercus cheboyganensis

Ferguson 1957
1957
Loc

Cypricercus setosus

Farkas 1957
1957
Loc

Cypricercus vietsi

Farkas 1957
1957
Loc

Strandesia evae

Gauthier 1951
1951
Loc

Cypricercus rotundus

Tressler 1950
1950
Loc

Cypricercus episphaenus sensu

Tressler 1949
1949
Loc

Strandesia unicolor

Klie 1944
1944
Loc

Cypricercus centrurus (

Klie 1940
1940
Loc

Strandesia cyprinotoides

Klie 1938
1938
Loc

Strandesia hancocki

Lowndes 1931
1931
Loc

Strandesia carteri

Klie 1930
1930
Loc

Strandesia vavrai persica

Bronshtein 1925
1925
Loc

Cypricercus mongolicus

Daday 1909
1909
Loc

Eucypris mongolica (

Daday 1909
1909
Loc

Cypricercus episphaenus G.W. Müller, 1908

G.W. Muller 1908
1908
Loc

Cypricercus maculatus G.W. Müller, 1908

G.W. Muller 1908
1908
Loc

Cypricercus inermis (

Brady 1904
1904
Loc

Strandesia inornata (

Sars 1901
1901
Loc

Strandesia psittacea psittacea (

Sars 1901
1901
Loc

Strandesia variegata (

Sars 1901
1901
Loc

Strandesia strandesioides ( G.W.Müller, 1898 )

G.W.Muller 1898
1898
Loc

Strandesia vavrai vavrai ( G.W.Müller, 1898 )

G.W.Muller 1898
1898
Loc

Cypricercus testudinarius (

Sharpe 1897
1897
Loc

Cypricercus cuneatus

Sars 1895
1895
Loc

Strandesia mercatorum (

Vavra 1895
1895
Loc

Cypricercus burlingtonensis (

Turner 1894
1894
Loc

Strandesia bicuspis bicuspis (

Claus 1892
1892
Loc

Strandesia bicuspis mucronata (

Claus 1892
1892
Loc

Strandesia odiosa (

Moniez 1892
1892
Loc

Cypricercus adustus (

Koch 1837
1837
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