Description of Aporcella coffeae sp. nov. (Nematoda: Dorylaimida: Aporcelaimidae), Associated with Coffee Plantations in Central Highland of Vietnam

Abstract. A new species belonging to the genus Aporcella, collected from replanted coffee orchards in the Central Highland of Vietnam, is described and illustrated. Aporcella coffeae sp. nov. is characterized by its 3.29–3.81 mm long body, lip region offset by constriction and 21–23 µm broad, odontostyle 17.5–18.5 µm long and always shorter than lip region diameter, neck 752–889 µm long, pharyngeal expansion 485–600 µm long and occupying 62–68% of the total neck length, female genital system diovarian, uterus simple and 76–114 µm long, vulva transverse (V = 51–54), tail short and rounded conoid (41–55 µm, c = 65–84, c' = 1.0–1.2), and male absent. It is compared and distinguished from other large-sized Aporcella species, and a brief discussion of their relationships is provided.