From Fensome et al., 2019:

Evittosphaerula, Manum, 1979, p.242–243.
Emendation: Damassa, 1997, p.161,163.
Type: Manum, 1979, pl.2, figs.6–10, as Evittosphaerula paratabulata.

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Original description: [Manum, 1979]:

Description:
Dinoflagellate cysts with a parasutural network as the sole persistent structure, reflecting a gonyaulacacean tabulation.

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Modified description:

Stover and Williams, 1987, p. 91:

Synopsis:
Cysts subspherical, consisting solely of a parasutural network of wall material whose strands indicate a gonyaulacacean paratabulation of 4`, 6", 6c, 6```, 1p, 1````, 8s.

Description:
Shape: Subspherical, often modified by folding.
Wall relationships: Differentiation of the parasutural bands into a structureless base and a fibrous part suggests two wall layers. Standard wall terminology not applicable to this genus.
Wall features: Network is parasutural; wall material absent between parasutural bands.
Archeopyle: Unusual morphology precludes archeopyle determination.
Paratabulation: Indicated by parasutural bands; gonyaulacacean, formula: 4`, 6", 6c, 6```, 1p, 1````, 8s.
Paracingulum: Indicated by six polygonally-outlined areas.
Parasulcus: Indicated by eight polygonally-outlined areas. Large size of the anterior sulcal paraplate and the number of sulcal paraplates are unusual.
Size: Intermediate to large; 70 to about 115 µm.

Affinities:
Evittosphaerula, which consists exclusively of a parasutural network without intervening wall material, has an unique morphology.