Toscano de Brito, A.L.V., Leonardo Pessoa Felix, and Genaro Viana Dornelas. 2008. “Zygostates aderaldoana—A New Species in the Ornithocephalus Group of Subtribe Oncidiinae (Orchidaceae) from Paraíba, Northeast Brazil”. Selbyana 29 (1):125-27. https://ojs.test.flvc.org/selbyana/article/view/121218.