Copytus pseudoelongatus Ayress, 1995

Coimbra, João Carlos, Bergue, Cristianini Trescastro & Ramos, Maria Inês Feijó, 2020, Is Copytus Skogsberg, 1939 (Crustacea: Ostracoda) a neocytherideid? With description of a new family and two new species, Zootaxa 4729 (2), pp. 177-194 : 185

Copytus pseudoelongatus Ayress, 1995 or Neocytherideis pseudoelongatus ( Ayress, 1995) ?

McKenzie (1974, p. 157. text-fig. 2.a) figures a small specimen (0.59 mm) identified as Neocytherideinid sp., from the Neogene of Rutledge Creek, Victoria, Australia that seems to be Copytus , based on its outline and inner margin. Although only a line drawing of the internal view, it shows a LV rounded at both end margins, but more symmetrically rounded in the posterior one, with a wide inner lamella along the entire free margin bearing a deep and narrow anterior vestibule, and a wider, shallower one posteriorly. The central muscle scars as drawn form a vertical row of four tight imprints high in the valve with two very small, closely adjacent antennal scars at some distance to the anterior. The hinge is apparently more typical of Copytus , but is not well illustrated. Ayress (1995), considered McKenzie’s species a junior synonym of his new species Copytus pseudoelongatus recorded in the late Eocene of New Zealand. However, the holotype of C. pseudoelongatus illustrated in figure 13 is different from Neocytherideinid sp., the former being larger (l = 0.70 mm) and less rounded posteriorly, besides important differences in the anterior vestibule and the number and distribution pattern of the anterior radial pore canals. According to Ayress (1995, p. 915), C. pseudoelongatus bears the subvertical row of four adductor scars typical of Neocytherideis .