Cabelodopsis, Higuti, Janet & Martens, Koen, 2012

Higuti, Janet & Martens, Koen, 2012, On a new cypridopsine genus (Crustacea, Ostracoda, Cyprididae) from the Upper Paraná River Floodplain (Brazil), Zootaxa 3391, pp. 23-38 : 28-30

Cabelodopsis n. gen.

Type species: Cypridopsella hispida Sars, 1901 (here designated)

Origin of name: the name is a contraction of “Cabelo” meaning ‘hair’ in Portuguese (referring to the hirsute aspect of the type species) and ‘opsis’, referring to the genus typicus of the subfamily, Cypridopsis .

Diagnosis: Carapace hirsute, but without external valve ornamentation and of medium size, LV overlapping RV on all sides, RV with large posterior selvage, LV with large, double posterior inner list. Hinge simple and adont, LV at the apex with a slight cardinal groove.

A2 with end claw G2 very wide and stout in the female, and with a series of rounded teeth in the distal 2/3. Distal segment of Mx1-palp elongated, ca. three times as long as basal width. T2 with penultimate segment divided, seta d1 absent, d2 of medium length.

Scale bars: A, D, G, I, J, 200 Μm; and B, C, E, F, H, 100 Μm.

The genus is thus far monospecific

Differential diagnosis: the new genus is closely related to Zonocypris with which it shares the short and stout claw G2, by which both genera are easily separated from all other cypridopsine genera. The new genus furthermore differs from Potamocypris by the cylindrical distal palp segment of the Mx1 (spatulate in Potamocypris ). From Zonocypris s. s., Cabelodopsis n. gen. can be distinguished by the absence of prominent valve surface ornamentation (present in all Zonocypris s. s.), and by its most hirsute aspect (absent in Zonocypris s. s.). The other main differences are in the hinge, which is simple and adont in Cabelodopsis n. gen., but which has a relatively welldeveloped postero-dorsal tooth in Zonocypris s. s., either in the RV or in the LV.