Ischnomesus Richardson 1908
- Dataset
- Three new species of the genus Ischnomesus (Isopoda: Asellota: Ischnomesidae) from Brazilian deep sea
- Rank
- GENUS
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Isopoda
- family
- Ischnomesidae
- genus
- Ischnomesus
diagnosis
Diagnosis. See Kavanagh et al. (2015). Species included: Ischnomesus anacanthus Wolff, 1962; I. andriashevi Birstein, 1960; I. antarcticus Schultz, 1979; I. armatus Hansen, 1916; I. bacilloides (Beddard, 1886); I. bacillopsis (Barnard, 1920); I. bacillus (Beddard, 1886); I. bidens Menzies, 1962; I. birsteini Wolff, 1962; I. bispinosus (G. O. Sars, 1868); I. bruuni Wolff, 1956; I. calcificus Menzies & George, 1972; I. caribbicus Menzies, 1962; I. carolinae Chardy, 1974; I. chardyi Kussakin, 1988; I. decemspinosus Menzies, 1962; I. elegans Menzies, 1962; I. elongatus Birstein, 1963; I. fragilis Birstein, 1971; I. glabra Kensley, 1984; I. gracilis (Birstein, 1960); I. harrietae Kavanagh, Frutos & Sorbe, 2015; I. justi Merrin & Poore, 2003; I. kussakini nom. nov. (Kussakin, 1982); I. latimanus Birstein, 1971; I. magnificus Menzies, 1962; I. multispinis Menzies, 1962; I. norvegicus Svavarsson, 1984; I. paucispinis Menzies, 1962; I. planus Wolff, 1962; I. profundus Hansen, 1916; I. roseus Wolff, 1962; I. simplex Menzies & George, 1972; I. simplissimus Menzies, 1962; I. spaercki Wolff, 1956; I. tasmanensis Merrin & Poore, 2003; I. vinogradovi Birstein, 1963 and I. wolffi Menzies, 1962.
discussion
Remarks. According to Kavanagh et al. (2015), the freely articulating posterior pereonites, pleonite 1 and pleotelson observed in Ischnomesus is a condition presumed to be plesiomorphic, with other genera showing various degrees of fusion of the pereonites (e. g. pereonites 5 – 7, pleonite and pleotelson fused together in genus Haplomesus; Kavanagh & Wilson 2007). Uniarticulate uropods have been described by Merrin & Poore (2003) for Ischnomesus justi, so the biarticulate uropods may not be a diagnostic character for the genus, although all other species, described with this structure, have biarticulate uropods.
materials_examined
Type species: Ischnosoma bispinosum G. O. Sars, 1868 (by monotypy).
Name
- Homonyms
- Ischnomesus Richardson 1908
- Ischnomesus