This species was first described by Alfred Philpott in 1917 and named Mecyna adversa. In 1988 J. S. Dugdale discussed this species under the name Mnesictena adversa. In 2010 the publication The New ZealandInventory of Biodiversity placed this species in the genusUdea and this placement has been followed by many New Zealand natural history institutions and collections. However this placement has been brought into doubt by the work of Richard Mally and Matthias Nuss.