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Machado, A.B.M. and Lacerda, D.S.S. 2017.

Revalidation of Platystigma Kennedy, 1920, with a synopsis of the quadratum species group and the description of three new species (Odonata: Pseudostigmatidae)

. Zootaxa. 4242, 3 (Mar. 2017), 493–516. DOI:https://doi.org/10.11646/zootaxa.4242.3.4.