Parasaveljevia

Pastor, Catalina, Russo, Virginia Lo & Villares, Gabriela, 2015, Two new species of Parasaveljevia Wieser, 1953 (Thoracostomopsidae, Nematoda) from Argentinean coasts (Chubut, Argentina), Zootaxa 3999 (4), pp. 498-510 : 504

Key to species of Parasaveljevia (based on males only)

1. Lateral cephalic setae longer than the other four and cephalic setae inserted in the posterior third of head................2

1’. Lateral cephalic setae of the same length of the other four and cephalic setae inserted at the anterior end of the head capsule.............................................................................. P. uncinoa n. sp. ( Argentina).

2. Apical organ or cirri on each lateral side of the head, at level of labial setae, tail 4.5–5.0 anal diameters long........................................................................................ P. cirrifera Wieser, 1953 ( Chile) .

2’. Apical organ or cirri on each lateral side of the head, between labial setae and cephalic setae, tail less than 4.5 anal diameters long........................................................................ P. limitense n. sp. ( Argentina).