title: A new species of Capillaria (Nematoda: Capillariidae) parasitizing Conger orbignianus (Pisces: Congridae) from Argentina.
abstract: Capillaria (Procapillaria) navoneae n. sp. is described from the congrid fish Conger orbignianus from waters off Mar del Plata, Argentina (38 degrees 08'S, 57 degrees 32'W) (prevalence 29.17%, mean intensity +/- SD 6.07 +/- 6.59). The new species is assigned to the subgenus Procapillaria Moravec, 1987, despite the absence of vulvar appendages in gravid females. Of the 3 species so far known in the subgenus, the new one most closely resembles C. (P.) margolisi, from which it is distinguished by lacking a medial expansion in the spicule and a slightly elevated anterior lip of vulva, and by having a shorter esophagus, a larger number of stichocytes, and a shorter tail.
authors.affiliation: Laboratorio de Parasitología, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata-Consejo Nacional de Investigaciones Científicas y Técnicas Mar del Plata, Argentina. jtimi@mdp.edu.ar
authors.forename: Juan T
authors.initials: JT
authors.lastname: Timi
authors.forename: María A
authors.initials: MA
authors.lastname: Rossin
authors.forename: Ana L
authors.initials: AL
authors.lastname: Lanfranchi
mesh_terms: D000818:Animals; D001118:Argentina; D002195:Capillaria / Q000033:anatomy & histology / Q000145:classification*; D004524:Eels / Q000469:parasitology*; D017189:Enoplida Infections / Q000469:parasitology / Q000662:veterinary*; D005260:Female; D005393:Fish Diseases / Q000469:parasitology*; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000662:veterinary*; D007422:Intestines / Q000469:parasitology; D008297:Male