This species was described by Edward Meyrick in 1889 using a specimen he collected in the WaitakereRange in Auckland and named Gracilaria leucocyma. George Hudson discussed this species under the name Parectopa laucocyma in his 1928publicationThe Butterflies and Moths of New Zealand. The specimen collected by Meyrick was the only recorded specimen until this species was rediscovered in 1954 by K. A. J. Wise. In 1961 Lajos Várirestricted the genus Parectopa to Holarctic species which do not have genital characteristics that resemble New Zealand species. As a result, John S. Dugdale placed this species in the genus Acrocercops. However the genus level classification of Acrocercops leucocyma is regarded as unsatisfactory and as such the species is currently also known as Acrocercops ''leucocyma.'' The holotype specimen is held at the Natural History Museum, London.