A new species of Dollfusentis Golvan, 1969 (Palaeacanthocephala: Illiosentidae) in the striped mojara, Eugerres plumieri (Perciformes: Actinoptergii), from Bahia de Chetumal, Quintana Roo, Mexico

Abstract

A new species, Dollfusentis salgadoi n. sp., is described from Eugerres plumieri, Bahía de Chetumal, Quintana Roo, México. The new species is most similar to D. bravoae, but has 17–19 hooks per longitudinal row on the proboscis (excluding the ventral crescent), longer lemnisci (2250±391, n=44), testes that are longer and wider (322±38, n= 25 long and 176±29, n= 25 wide), and a uterine bell that is smaller (289±61, n= 23 long and 80±24, n= 23 wide). Dollfusentis bravoae has 16–17 hooks per longitudinal row on the proboscis, shorter lemnisci (2015±516, n=9), testes that are shorter and not as wide (218±46, n= 6 long and 136±24, n= 6), and a uterine bell that is larger (321±64, n= 4 long and 78±33, n= 4 wide). Adults of all other known species of the genus inhabit the intestine of their host, but adults of D. salgadoi n. sp. inhabit the rectum of its host.