Diaphanocypris pedroensis, Nagler & Geist & Matzke-Karasz, 2014

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 : 418

Diaphanocypris pedroensis nov. comb. ( Tressler, 1950)

( Fig. 12A, D–F )

v * 1950 Strandesia pedroensis —Tressler: 79, Fig. 14 p–r, x. 2011 Tanycypris pedroensis —Martens & Savatenalinton: 75–76.

Diagnosis. L = 1.33 m, H = 0.56 mm, H <2L; greatest height at posterior third. Carapace in dorsal view narrow, elongated. Anterior margin broadly rounded. Posterior margin sloping ventrally. Surface of carapace smooth and sparsely set with setae. A1 with Wouters organ and Rome organ ( Fig. 12A ). T1 without b-seta and without d-seta ( Fig. 12D ). T2 without d1 and without d2. CR short and arcuate, Sp located at the base of Gp and "separated from it by less than the width of the seta" ( Tressler 1950) ( Fig. 12E ). CR-Attachment without vb, but with two loops and a very long and slender db ( Fig. 12F ). Males unknown ( Tressler 1950).

History. Tressler (1950) described this species as Strandesia pedroensis . He deposited the holotype in the NMNH (No. 83008). Broodbakker (1984) suggested that this species could be a synonym of, or at least a near relative of, Tanycypris inermis . Savatenalinton & Martens (2009b) list Strandesia pedroensis under "uncertain species in Strandesia ". Two years later Martens & Savatenalinton (2011) combined it as Tanycypris pedroensis without comment and listed the species as Strandesia pedroensis as well.

Conclusion. The lack of d1- and d2-seta on T2, the lack of b- and d-setae on T1 and the lack of vb on the CR attachment are characters typical of the genus Diaphanocypris in the Cypricercinae . Therefore we here suggest the new combination of Diaphanocypris pedroensis . This view is supported by the carapace shape in dorsal view, which is egg-shaped and not elliptical as in Tanycypris and Strandesia . Diaphanocypris pedroensis nov. comb. differs from D. meridana in the presence of a G2-seta on the A2 (no claw as in D. meridana ), in the relatively shorter and arcuate CR (long and straight in D. meridana ), the position of Sp in relation to the base of Gp (in D. meridana it is separated by more than the width of Sp) and the lateral outline of the carapace, which in D. pedroensis is more elevated and more oval than in D. meridana .

Figures

FIGURE 12. Diaphanocypris pedroensis and Nealecypris clavigera. A, A1 D. pedroensis; B, A1 N. clavigera; C, T1 (female) N. clavigera; D, T1 (female) D. pedroensis; E, CR D. pedroensis; F, CR attachment D. pedroensis; G, CR attachment N. clavigera; H, CR N. clavigera. Scale bar = 100 µm for A–H.