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Abstract
The South American genera Andesiops and Deceptiviosa were established by Lugo-Ortiz and McCafferty (1999). A review of the type material of both genera and examination of additional specimens has revealed that both imagos and nymphs of the two taxa lack significant characters to distinguish between them. Therefore, Deceptiviosa is placed as a junior subjective synonym of Andesiops. The species D. ardua and D. torrens are transferred to Andesiops; A. ardua comb. n. and A. torrens comb. n.