Neonesidea, Maddocks-Maddocks, 2021

Maddocks, Rosalie F., 2021, Taxonomic applications of the esophageal flapper valve in the Genus Neonesidea (Bairdioidea, Podocopida, Ostracoda), including descriptions of new and poorly known species from the Caribbean and Gulf of Mexico, Zootaxa 4903 (4), pp. 451-492 : 464

Neonesidea sp. aff N. dinochelata

( Figure 5 V–Z, Graph 1)

partim 1983 Neonesidea dinochelata (Kornicker) —Palacios-Fest et al., Table 1, Pl. 1, fig. 9 (only).

Material: Eleven subfossil specimens.

Dimensions: Specimen 4072W, from Guantanamo Bay, Cuba: LVL 0.745 mm, LVH 0.429 mm, RVL 0.731 mm, RVH 0.382 mm. See also Graph 1 .

Remarks: This morphotype is intermediate in size and shape between N. dinochelata and N. florea . It is distinguished by the more extended, up-curved posterior angle. Because it occurs in the same samples as N. dinochelata and can be sorted consistently, it is here treated as a separate species. Anatomical information will be needed to support this identification.

Distribution: One of the illustrations provided by Palacios-Fest et al. (1983, fig. 9) for N. dinochelata on the northeast coast of Yucatan may belong to this species. In this study it was identified in dry sediment samples from the Bahamas, Belize and Cuba.

Figures

FIGURE 5. A–U, Neonesidea dinochelata (Kornicker). A, C, specimen 4071RV; B, D, specimen 4070LV; E–F, specimen 4047W; G–H, specimen 4048RV; I, J, specimen 4068RV; J, L, specimen 4067LV; all from the Bahamas. M, specimen 4949RV; N–O, specimen 4050LV; both from Belize. P–T, specimen 4065W from Grand Cayman Island. U, specimen 4069RV from Florida Keys. V–Z, Neonesidea sp. aff. N. dinochelata (Kornicker). V, specimen 4052RV from Belize; W–Z, specimen 4072W from Guantanamo Bay, Cuba. A, E, G, I, M, P, U–V, W, all RV exteriors in TL; B, F, J, N, Q, X, all LV exteriors in TL; C, H, K, R, Y, all AMS of RV; D, L, O, S, Z, all AMS of LV; T, DV of RV and LV in TL. Scale bar = 50 µm.