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Checked: verified by a taxonomic editorIdomene Philippi, 1843 
AphiaID: 115463

Classification: Biota > Checked: verified by a taxonomic editorAnimalia (Kingdom) > Checked: verified by a taxonomic editorArthropoda (Phylum) > Checked: verified by a taxonomic editorCrustacea (Subphylum) > Checked: verified by a taxonomic editorMulticrustacea (Superclass) > Checked: verified by a taxonomic editorHexanauplia (Class) > Checked: verified by a taxonomic editorCopepoda (Subclass) > Checked: verified by a taxonomic editorNeocopepoda (Infraclass) > Checked: verified by a taxonomic editorPodoplea (Superorder) > Checked: verified by a taxonomic editorCyclopoida (Order) > Checked: verified by a taxonomic editorPoecilostomatoida (Suborder) > Checked: verified by a taxonomic editorClausidiidae (Family) > Checked: verified by a taxonomic editorIdomene (Genus)
Status taxon inquirendum
Rank Genus
Typetaxon Checked: verified by a taxonomic editorIdomene forficata Philippi, 1843 (type by original designation)
Parent Checked: verified by a taxonomic editorClausidiidae Embleton, 1901
Sources  original description Philippi, A. (1843). Fernere Beobachtungen uber die Copepoden des Mittelmeeres. Archiv fur Naturgeschichte. 9(1):54-71, pls. 3-4. [details]

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taxa (4)

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 Species Checked: verified by a taxonomic editorIdomene aemula (Thompson I.C. & Scott A., 1903)
Species Checked: verified by a taxonomic editorIdomene forficata Philippi, 1843
Species Checked: verified by a taxonomic editorIdomene laticauda (Thompson I.C. & Scott A., 1903)
Species Checked: verified by a taxonomic editorIdomene rostrata (Scott T., 1893)
Environment marine, brackish, fresh, terrestrial
Links Checked: verified by a taxonomic editor3x5 C.B. Wilson Taxonomic Card - Idomene Document hosted within WoRMS 
Unreviewed: has not been verified by a taxonomic editorTo ITIS
From editor or global species database
Checked: verified by a taxonomic editorTaxonomy Philippi (1843: 64) proposed this genus for a new species Idomene forficata based on a single individual. The original description is fragmentary and insufficient for unequivocal identification, hence most authors have invariably referred to Sars’s (1906a: 134) detailed redescription and used his diagnosis of the genus as the major standard of reference for adding subsequent species, either newly described or reassigned from other genera regarded as junior synonyms of Idomene. This shift in attention had the unfortunate consequence that noone either scrutinized the real identity of Philippi’s (1843) type species or confirmed its conspecificity with what Sars (1906a) had identified as I. forficata. In spite of their poor quality, Philippi’s (1843) illustrations provide sufficiently compelling evidence that I. forficata is not a harpacticoid but rather a poecilostome cyclopoid. The 7-segmented antennule with four setae on the basal segment, the 3-segmented antennary endopod, the mandibular gnathobase with distinct blades (his Fig. 4f, labelled “ein Kaufuss?”), and the laterally located, uniramous fifth legs (with 2 outer margin spines, 1 apical seta and 1 inner spine) not only unequivocally exclude I. forficata from the oligoarthran Harpacticoida but also identify it as a member of the family Clausidiidae in the Cyclopoida. The armature pattern and shape of the maxilliped is another line of evidence supporting such assignment. It is conceivable that Idomene Philippi, 1843 is the senior synonym of either Hemicyclops Boeck, 1873 or Hersiliodes Canu, 1888. It is here considered a genus incertae sedis in the Clausidiidae. Since Philippi’s type material no longer exists a neotype can unfortunaly not be designated.
Three available harpacticoid genus-group names have entered into the synonymy of Idomene (Lang 1934: 28; 1936c: 14): Xouthous Thomson, 1883 (type: Xouthous novaezealandiae Thomson, 1883), Megarthrum Norman & Scott, 1906 (type: Dactylopusia purpurocincta Norman & Scott, 1905) and Idomenella T. Scott, 1906a (type: Dactylopus coronatus T. Scott, 1894b). Xouthous, being the oldest available name, is here proposed as the valid name for Idomene Philippi, 1843 sensu Sars (1906a).
In addition to the type, the following species should be referred to the genus Xouthous: Dactylopus coronatus T. Scott, 1894b = Xouthous coronatus (T. Scott, 1894b) comb. nov.; Dactylopus pectinatus Scott & Scott, 1898 = Xouthous pectinatus (Scott & Scott, 1898) comb. nov.; Dactylopus antarcticus Giesbrecht, 1902 = Xouthous antarcticus (Giesbrecht, 1902) comb. nov.; Dactylophusia laticaudata Thompson & Scott, 1903 = Xouthous laticaudatus (Thompson & Scott, 1903) comb. nov.; Dactylopusia purpurocincta Norman & Scott, 1905 = Xouthous purpurocinctus (Norman & Scott, 1905) comb. nov.; Idomene pusilla Brady, 1910 = Xouthous pusillus (Brady, 1910) comb. nov.; Megarthrum simulans Brady, 1910 = Xouthous simulans (Brady, 1910) comb. nov.; Idomene borealis Sars, 1911a = Xouthous borealis (Sars, 1911a) comb. nov.; Dactylopusia ferrieri T. Scott, 1912 = Xouthous ferrieri (T. Scott, 1912) comb. nov.; Idomene intermedia Lang, 1934 = Xouthous intermedius (Lang, 1934) comb. nov.; Xouthous maldiviæ Sewell, 1940 = Xouthous maldiviae Sewell, 1940; Idomene scotti Lang, 1948 = Xouthous scotti (Lang, 1948) comb. nov.; Idomene parasimulans Médioni & Soyer, 1968 = Xouthous parasimulans (Médioni & Soyer, 1968) comb. nov.; and Idomene cookensi Pallares, 1975b = Xouthous cookensis (Pallares, 1975b) comb. nov. [incorrect original spelling corrected by Wells (2007: 85)]. Since Philippi’s (1843) text and figures do not bear any relationship to Idomene forficata sensu Sars (1906a) a new name is required for the latter for which I propose, in the absence of any available junior synonyms, Xouthous sarsi sp. nov. The new species can be differentiated from its congeners by the specific characters given in Sars’s (1906a: 134–135, Plate LXXXII) description (ICZN Art. 13.1.2).
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LSID urn:lsid:marinespecies.org:taxname:115463
Edit history
Date   action   by
2004-12-21 15:54:05Z  created  Huys, Rony
2005-04-01 10:30:46Z  changed  Cuvelier, Daphne
2008-06-24 07:15:47Z  changed  Walter, T. Chad
2010-11-23 21:21:37Z  changed  Boxshall, Geoff
2011-02-01 11:11:26Z  changed  Walter, T. Chad
2011-09-28 21:02:14Z  changed  Boxshall, Geoff
2015-06-18 22:39:03Z  changed  Walter, T. Chad
2015-06-25 06:36:05Z  changed  Walter, T. Chad
2015-07-02 11:48:44Z  changed  Boxshall, Geoff
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  Citation: Boxshall, G.; Walter, T. Chad (2015). Idomene Philippi, 1843. In: Walter, T.C. & Boxshall, G. (2017). World of Copepods database. Accessed through: World Register of Marine Species at http://marinespecies.org/aphia.php?p=taxdetails&id=115463 on 2017-10-17
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