Difference between revisions of "Ithyleucon"
m (Imported from ZooKeys) |
m (1 revision) |
(No difference)
| |
Latest revision as of 15:09, 31 October 2012
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Corbera2012ZooKeys235, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Corbera2012ZooKeys235">{{Citation See also the citation download page at the journal. |
Ordo: Cumacea
Familia: Leuconidae
Name
Ithyleucon Corbera, 2012 gen. n. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnosis
Pseudorostrum extending anterodorsally and upturned; antenna 1 geniculate between peduncle article 1 and 2; accessory flagellum longer than main flagellum article 1; female with exopods on maxilliped 3 and pereopods 1–3; male with exopods on maxilliped 3 and pereopods 1–4; pereopod 2 ischium very short; uropod endopod 2-articulate; male with two pairs of pleopods.
Remarks
The shape of the carapace and the position of the pseudorostrum of Ithyleucon gen. n. resemble those of Pseudoleucon Zimmer, 1903. However, Ithyleucon differs from the latter by 1) the size of the uropod endopod, which is longer than the peduncle and of similar length as the exopod (i.e., as long as the peduncle and certainly shorter than the exopod in Pseudoleucon) and by 2) the antenna 1 accessory flagellum, which is longer than the main flagellum article 1 (shorter in Pseudoleucon). Although these two features, as well as the geniculated antenna 1, are in agreement with the diagnosis of Bytholeucon Watling, 1991, the anterolateral corner is strongly angular in this genus and the known males observed up until now have had only one pair of pleopods.
In addition to these morphological differences, the only two known Pseudoleucon species also show divergence in terms of their ecology and biogeography. They inhabit shallow bottoms of the northeastern Pacific and a phylogenetic relationship with the genus described herein seems to be highly unlikely.
Etymology
From the Greek ithys, meaning upright, referring to the position of the pseudorostrum, and Leucon, the stem genus. Gender masculine.
Type species
Ithyleucon sorbei sp. n.
