Bythognathia yucatanensis, New Genus, New Species, from Abyssal Depths in the Caribbean Sea, with a List of Gnathiid Species Described Since 1926 (Isopoda: Gnathiidea)

Study of the functional morphology of mouthparts of parasitic isopods of marine fishes

“…Described three genera within the cirolanid family (Metacirolana, Neocirolana, and Anopsilana) and three other new genera (Natatolana, Politolana and Cartetolana) [9] . Studied the morphology of the body appendages of the gnathiid isopod Bythognathia yucatunensis [10] . Examined the unusual endoparasitic isopod Tiarinion texopallium, from the majid crab Tiarinia sp.…”

First records of peracarid crustaceans from the Cayo Matias Ocean Blue Hole, SW Cuba, with the description of two new species

“…The genera Bythognathia, Caecognathia and Gnathia have been documented from the Gulf of Mexico and Caribbean Sea (Camp 1988;Schotte et al 2009). Gnathia is the only gnathiid genus recorded from Cuba with the following four species: G. maxillaris (Montagu, 1804), G. virginalis, Monod, 1926, G. puertoricensis Menzies and Glynn, 1968and G. hemingwayi Ortiz and Lalana, 1997.…”

Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from southeastern Australia

“…These include: absence of eyes (present in two species of Bathygnaihia) and appendix masculina one-half to three-quarters length of the pleopodal endopod. Bythognathia (clade 5), the least derived genus, is monotypic and defined by numerous autapomorphies (Camp, 1988 for complete description). Bythognathia is defined in this analysis by the following apomorphics convergent in other taxa: antenna 1 flagellum 7articled; uropodal rami clearly extending beyond the apex of pleotelson; pylopod 6articled.…”

“…Only one species, B. opsilhopsis, has been recorded below 2000 m in Australia and gnathiids are noticeably absent from the limited number of samples taken below this depth (Poorect al., 1994) and rare in other parts of the world. Only Bythognalhia yucatanensis Camp from 3700-3800 m in the Caribbean, Caecognathia caeca Richardson from 2638 m in the western North Atlantic, and Bathygnathia segonzaci (Cals) from abyssal depths in the southern Atlantic have been reported from bathyal depths (Camp, 1988).…”

“…As well as describing numerous new species from Australian coastal, shelf and slope environments we present a new phylogeny and classification of the family. This phylogeny is based on a cladistic analysis of 95 described species from Camp, 1988). Species have been reallocated to genus according to the classification scheme adopted in this paper.…”