Achilus is the type genus[1] of planthoppers of the family Achilidae.

This may be a monotypic genus containing the type species Achilus flammeus.

[2]Kirby, 1818: which is the "red fingernail bug" and found in Australia.

[3] The placement of A. cixioides Spinola from Chile, is uncertain,[4] but it may belong in Mnemosyne Stål, 1866 (Cixiinae}.

The genus described by William Kirby in 1819.