Eulimnadia

Marinone, María Cristina, Urcola, Juan Ignacio & Rabet, Nicolas, 2016, Review of the Eulimnadia (Branchiopoda: Spinicaudata: Limnadiidae) from Argentina with the description of a new species, Zootaxa 4158 (3), pp. 419-432 : 430

Key to the Eulimnadia species known from Argentina, based on SEM images of eggs:

1. Eggs cylindrical ( Fig. 4 G, H).................................................................. E. ovisimilis

- Eggs spherical or subspherical.......................................................................... 2

2. Eggs spherical, ornamented with oval or circular depressions with central rounded domes, fringed by small fingerlike digiti- form projections ( Fig. 4 F)...................................................................... E. ovilunata

- Eggs subspherical, ornamented with elongate polygonal depressions (mainly hexagonal), delimited by irregularly serrated ridges, bearing more or less developed spiniform projections at ridge intersections ( Fig. 4 A–D)......... E. pampa sp. nov.

Figures

FIGURE 4. External morphology of Eulimnadia eggs from Argentina and comparison with similar eggs from other parts of South America. E. pampa sp. nov. A – D, morphological variation from least to highly developed ridges and spines. C, egg from Entre Ríos Province, misidentified as Limnadia brasiliensis from César (1990). E, E. magdalenensis Roessler, 1989 from Brazil, BA, Barrolândia. F, E. ovilunata Martin & Belk, 1989 from Bolivia, Tarija Department, Villamontes area. E. ovisimilis Martin & Belk 1989: G, lateral view of egg from Corrientes Province; H, lateropolar view of an egg from Formosa Province; I, polar view of an egg from Corrientes Province. Scale bars: 20 µm.