In 1923, Alexandre Arsène Girault described the species A. annulicornis and circumscribed the new genus Austroencyrtus for it.

[3] The genus Zamenhofella was classified as a junior synonym of Austroencyrtus in 1997 by Edward Dahms and Gordon Gordh.

[4] Liao Dingxi and Tetsusaburo Tachikawa [Wikidata] circumscribed the genus Paracerchysius for their new species P. ceresii in 1984; Tachikawa synonymized this genus with Austroencyrtus the following year[4] following the suggestion of Vladimir A. Trjapitzin [ru].

[5] As of 2017[update], the following species are recognized:[1] In 1984, John Noyes (entomologist) and Mohammad Hayat [Wikidata] included A. guamensis (Fullaway, 1946), which they had transferred from Cerchysius.

[6] Noyes and Hayat also claimed there were at least three additional undescribed species in Austroencyrtus from Papua New Guinea and New Hebrides.