Revision of the genus Tanycypris (Ostracoda, Cypricercinae) with the description of Tanycypris alfonsi n. sp., and an identification key to the genus
Author
Nagler, Christina
Aquatic Systems Biology Unit, Department of Ecology and Ecosystem Management, Technische Universitaet Muenchen, Muehlenweg 22, 85350 Freising, Germany. Department of Earth and Environmental Sciences, Palaeontology and Geobiology, GeoBio-Center, Ludwig-Maximilians-Universitaet Muenchen, Richard-Wagner-Str. 10, 80333 Muenchen, Germany.
Author
Geist, Juergen
Aquatic Systems Biology Unit, Department of Ecology and Ecosystem Management, Technische Universitaet Muenchen, Muehlenweg 22, 85350 Freising, Germany. Department of Earth and Environmental Sciences, Palaeontology and Geobiology, GeoBio-Center, Ludwig-Maximilians-Universitaet Muenchen, Richard-Wagner-Str. 10, 80333 Muenchen, Germany.
Author
Matzke-Karasz, Renate
text
Zootaxa
2014
2014-06-24
3821
4
401
424
journal article
5340
10.11646/zootaxa.3821.4.1
dfcf0206-b55e-4e91-958d-2765d0011944
1175-5326
4920148
E2792744-6620-40DA-83C7-7BC92E3B302C
Diaphanocypris meridana
(
Furtos, 1936
)
* 1936
Herpetocypris meridana
Furtos
: 101–102, figs 60–63.
v 1963
Dolerocypris sagitta
(Klie)
—Löffler: 200.
1984
Tanycypris meridana
—Broodbakker: 16–21, figs 1–2.
v; non 1984
Strandesia pedroensis
—Broodbakker: 16.
1984
Herpetocypris bonettoi
Ferguson
—Broodbakker: 16.
1990
Diaphanocypris meridana
—Würdig & Pinto: 31–38, pls 1–3.
2011
Herpetocypris muhitis
(Tressler)
—Martens & Savatenalinton: 35.
Diagnosis.
L =
1.22–1.31 mm
, H =
0.51–0.56 mm
, W =
0.35 mm
; carapace in lateral view elongate-reniform, in dorsal view elliptical; four times longer than broad. Valve surface striate with a light green colour. LV slightly larger than RV. Anterior part of internal LV without groove and without inner list. A1 with small Wouters organ and Rome organ. T1 without b- and d-setae. T2 without d1 and without d2. CR approximately straight and strongly serrate. CR attachment with two loops; vb is reduced to a small spine, or absent, respectively. Males unknown (
Furtos 1936
;
Broodbakker 1984
;
Würdig & Pinto 1990
; Savatenalinton & Martens 2009).
History.
Furtos (1936)
named
Herpetocypris meridana
and was the first to describe it; she found it near
Mérida
(
Mexico
).
The
holotype
is deposited in
NMNH
(No. 67974)
.
Löffler (1963)
assumed
Doleroypris
sagitta
Klie, 1939
and
Herpetocypris meridana
Furtos, 1936
were synonyms and rejected a generic assignment of this species to the genus
Herpetocypris
.
However, Löffler did not examine
type
material.
Broodbakker (1984)
redescribed
H. meridana
as
Tanycypris meridana
, because of its typical CR and CR attachment, which has two eyelets and a reduced vb. He suggested
Strandesia pedroensis
Tressler, 1950
and
Herpetocypris bonettoi
Furtos, 1936
were synonyms of, or at least closely related to,
T. meridana
.
His material from several Caribbean islands is deposited in the collection of the Zoological Museum Amsterdam, which has recently been incorporated into the collections of Naturalis Biodiversity Center, Leiden.
Ferguson (1967)
described
Herpetocypris bonettoi
,
which he found in Madreijon don Felipe (Santa Fe,
USA
; NMNH No. 112987 and No. 112987).
H. bonettoi
is distinguished from
H. meridana
by body size and the appearance of the CR.
Martens & Behen (1994)
proposed a new combination,
Dolerocypris bonettoi
,
which Broodbakker had transferred to
Tanycypris
back in 1984.
Würdig & Pinto (1990)
synonymized
Herpetocypris meridana
Furtos, 1936
with
Dolerocypris sagitta
Klie, 1939
,
Herpetocypris bonettoi
Ferguson, 1967
and
Tanycypris meridana
. They erected the genus
Diaphanocypris
for this species, characterized by the lack of any structures in the inner lamella.
Martens & Savatenalinton (2011)
and
Karanovic (2012)
synonymized
Diaphanocypris meridana
additionally with
Herpetocypris muhitis
Tressler, 1950
.
According to
Karanovic (2012)
Diaphanocypris meridana
is present in the collection of ZMH (No. 1509), but this slide is actually labelled
Dolerocypris sagitta
(
Keyser & Schöning 1996
)
.
Conclusion.
After examination of
syntype
material of
Dolerocypris sagitta
and the
holotype
of
Strandesia pedroensis
we conclude: 1.
Diaphanocypris meridana
is a synonym of
Dolerocypris sagitta
and
Herpetocypris bonettoi
(however, the type material of the latter was not available due to relocation of the collection during the preparation of the present study. Subsequent inquiries have not been replied, so that the actual status of this material cannot be detailed). 2.
Strandesia pedroensis
is here transferred to
Diaphanocypris
(see
Diaphanocypris pedroensis
nov. comb.
). The possible synonymisation with
Herpetocypris muhitis
was not studied here.