Heterophoxus Shoemaker 1925
- Dataset
- A novel species of Heterophoxus Shoemaker, 1925 (Crustacea, Amphipoda, Phoxocephalidae) from southeast and southern Brazil, with an identification key to world species of the genus
- Rank
- GENUS
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Amphipoda
- family
- Phoxocephalidae
- genus
- Heterophoxus
type_taxon
Type species Heterophoxus pennatus Shoemaker, 1925 Diagnosis (modified from Barnard & Karaman 1991) Rostrum unconstricted. Eyes present. Antenna 1, article 2 short, ventral setae widely spread, but almost confined apically. Antenna 2, article 1 strongly ensiform, facial stout setae on article 4 in one main row, article 5 very short. Mandible, right incisor with 4 + teeth, right lacinia mobilis bifid, flabellate, molar not triturative, with three basally fused stout setae; palpar hump medium, apex of palp article 3 oblique. Maxilla 1, inner plate, with two setae, palp 2 - articulate. Maxilliped, inner plate, partly fused, poorly armed, apex of palp article 3 not strongly protuberant, article 4 not elongate, but apical nail distinct. Gnathopods small, similar, carpus of gnathopods 1 – 2 very short, without eusirid attachment, almost cryptic, propodus of gnathopods 1 – 2 ovatorectangular, elongate, poorly setose anteriorly, palms acute. Perepods 3 – 4, carpus with posteroproximal setae, propodus with thin armaments. Pereopod 5, basis, merus and carpus narrow. Pereopod 6, merus and carpus narrow. Pereopod 7 of ordinary size, ischium enlarged, dactylus ordinary. Epimeral plates 1 – 2 without long midfacial brushes or posterior setae. Epimeral plate 3 ordinary, bearing three or more long setae. Urosomite 3 without dorsal hook. Uropod 1, peduncle without inter-ramal spike, without displaced stout setae. Uropod 2, inner ramus ordinary. Uropod 3 ordinary, one of rami longer than peduncle, bearing article 2 on outer ramus, with two apical setae. Telson ordinary or with supernumerary lateral stout setae. Composition The genus is composed of 10 known species + 1 new species: Heterophoxus cephalodens Griffiths, 1975; H. despard Alonso, 2012; H. ellisi Jarret & Bousfield, 1994; H. oculatus (Holmes, 1908); H. ophthalmicus (Schellenberg, 1925); H. opus Griffiths, 1975; H. pellusidus Ren in Ren & Huang, 1991; H. pennatus Shoemaker, 1925; H. shoemakeri sp. nov.; H. trichosus K. H. Barnard, 1932 and H. videns K. H. Barnard, 1930.