Tarache acerba. Fruva acerba H. Edwards, 1881 became a secondary homonym of Acontia acerba Felder & Rogenhofer, 1874 when both species were moved into Acontia. Poole proposed the replacement name Acontia acerboides Poole, 1989. With the transfer of Fruva acerba to the genus Tarache Hübner the names are no longer homonyms so the name Tarache acerba (H. Edwards) is reinstated and Acontia acerboides Poole placed in synonymy with it.