Diagnosis: Shells of small size for the family (up to 3.4 mm), biconical, very elongate, slightly shouldered. Multispiral, very elongate protoconch. Teleoconch virtually smooth with microscopic growth lines, some very faint spiral lines in the middle of the last whorl and basal cords clearly present on the last whorls. Suture slightly impressed. Outer lip thickened and smooth, apart from the continuation of the basal cords. Inner lip with strong denticles and a posterior sinus. Columella smooth with a thickened callus. Short, open canal.
The genus Euspiralta is proposed for a strange little shell that cannot be placed in any of the known columbellid genera. The small size and the absence of any sculpture, apart from the basal cords and some very faint spiral lines in the middle of the last whorl, can be linked to some other genera: Ascalista Drivas & Jay, 1990; Mokumea Habe, 1991 and Pyreneola Iredale 1918.

According to Drivas & Jay (1990) typical characteristics of Ascalista are the absence of any spiral or axial sculpture, except for basal lirae, the absence of teeth in the inner lip and columella, and its narrow aperture. Euspiralta has clear teeth, some very faint spiral lines and also a much wider aperture than Ascalista. The spire is more or less similar.
According to the diagnosis of Habe (1991) Mokumea is characterised by: "shell small, fusiform, thin, smooth and polished. Surface decorated by the oblique brownish strips and white spiral zones along the suture or on the periphery of body whorl and both on the body whorP. Euspiralta is much more elegant, has a thicker shell, a narrower aperture and a completely different colour pattern than Mokumea.
The description of Pyreneola by Iredale (1918) gives no diagnosis. Fortunately, he assigned a type species: Columbella abyssicola (Brazier, 1877). Species of Pyreneola can easily be recognised by their typical ovate-elongate form with straight whorls without any shoulder or any impression of the suture. The outer lip of Pyreneola is not thickened, the inner lip is weakly thickened and denticulate. The columella is often raised and has a typical notch inside. Euspiralta has a completely different shape of shell, a clearly thickened outer lip and a different columellar shape.