Ferreira, A.C.S., Vieira, F.M., Da Silva, D.C.N., Ribeiro, L.B., Ferreira, J.A. & Muniz-Pereira, L.C. (2021)

Parapharyngodon hispidus n. sp. (Nematoda: Pharyngodonidae) in Tropidurus hispidus (Spix) (Squamata: Tropiduridae) from Caatinga Biome of the Vale do São Francisco, state of Pernambuco, Brazil with a key for the Neotropical species of the genus Parapharyngodon Chatterji

. Zootaxa, 4980 (1), 195–200.