Acanthoatractis xinguensis Jesus and Melo, 2024

Jesus, Ronald Ferreira, Nandyara, Bianca, Santos, Jeannie Nascimento dos & Melo, Francisco Tiago de Vasconcelos, 2024, Acanthoatractis xinguensis n. gen., n. sp. (Nematoda: Cosmocercoidea: Atractidae) parasite of yellow-spotted Amazon river turtle, Podocnemis unifilis Troschel (Testudines: Podocnemididae) in Brazilian Amazon, International Journal for Parasitology: Parasites and Wildlife 24, pp. 100961-100961 : 100961-

3.2. Acanthoatractis xinguensis Jesus and Melo n. gen., n. sp.

3.2.1. General description

Medium-sized nematodes, body cylindrical, tapering to both extremities. Males and females similar in length without lateral alae. Esophagus divided into defined corpus, elongated isthmus, and a bulb. Nerve ring situated in middle of esophagus, at beginning of isthmus; deirids small, located just below nerve ring. Excretory pore anterior to esophageal bulb, opening surrounded by radial cuticle striations; pore opening into large chamber with transverse striations. Posterior end with short, pointed tail, ventrally curved in both sexes.