Hyalostola is a monotypic moth genus belonging to the subfamily Drepaninae first described by George Hampson in 1914.

[1] Its only species, Hyalostola phoenicochyta, described by the same author in the same year, is found on Borneo.

The forewings are semi-hyaline white, irrorated (sprinkled) with rufous scales and tinged with purplish crimson to beyond the middle.

There are traces of rufous postmedial line, oblique to vein 4 and then incurved.

The hindwings are semi-hyaline white, tinged with purplish crimson, and irrorated with some rufous scales.