Description of Allodorylaimus tuccitanus sp. nov., with updated taxonomy of the genus (Nematoda: Dorylaimida: Qudsianematidae).

A new species of the nematode genus Allodorylaimus, found in natural habitats of the south-eastern Iberian Peninsula, is described. Allodorylaimus tuccitanus sp. nov. is characterised by its 1.51–1.69 mm long body, lip region hardly offset by depression or almost continuous and 14.0–15.5 µm wide, odontostyle 13.0–15.5 µm long, neck 321–417 µm long, pharyngeal expansion occupying 43–49% of the total neck length, presence of dorsal cell mass at level of cardia, female genital sytem diovarian, plicate sphincter, uterus bipartite and 101–207 µm or 2.0–3.6 body diameters long, V = 48–52, tail conical (38–45 µm, c = 34–42, c' = 1.4–1.6), spicules 55–59 µm long, and 11 spaced ventromedian supplements without hiatus. The taxonomy of the genus is updated, including a diagnosis, list of species, key to their identification, and compendium of their most relevant morphometric features. [ABSTRACT FROM AUTHOR]