Diaphanocypris meridana ( Furtos, 1936 )

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 : 417-418

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.