Pseudocheironchus, Leduc, 2013
publication ID |
https://doi.org/ 10.5852/ejt.2013.63 |
publication LSID |
lsid:zoobank.org:pub:BB33641C-6FAF-4D2E-93FB-C4951F7C058C |
DOI |
https://doi.org/10.5281/zenodo.3843859 |
persistent identifier |
https://treatment.plazi.org/id/D308E75C-FF14-44AB-9DA3-E2297C691AF6 |
taxon LSID |
lsid:zoobank.org:act:D308E75C-FF14-44AB-9DA3-E2297C691AF6 |
treatment provided by |
Carolina |
scientific name |
Pseudocheironchus |
status |
gen. nov. |
Genus Pseudocheironchus gen. nov.
urn:lsid:zoobank.org:act:D308E75C-FF14-44AB-9DA3-E2297C691AF6
Type species
Pseudocheironchus ingluviosus gen. et sp. nov.
Diagnosis
Cuticle without lateral differentiation or only weak lateral differentiation. Outer labial sensillae and cephalic setae in one circle; cephalic setae slightly longer than outer labial sensillae. Anterior portion of buccal cavity reduced, with six thin, slightly cuticularised rhabdions; posterior buccal cavity with three equal mandibles. Pharynx short, with well-developed anterior and posterior bulbs. Male with cupshaped pre-cloacal supplements. Tail short.
Etymology
This generic name refers to the close similarity between the new genus and Cheironchus . The two genera share a feature not found in any other genus of the Selachinematidae , viz., a pharynx with conspicuous anterior and posterior bulbs.
Remarks
Pseudocheironchus gen. nov. is similar to Cheironchus in having a pharynx with well-developed anterior and posterior bulbs and cup-shaped pre-cloacal supplements. Pseudocheironchus gen. nov. differs from the latter in having a cuticle without or only weak lateral differentiation (vs. lateral differentiation of larger, irregularly spaced punctations in Cheironchus ), cephalic setae only slightly longer than the outer labial sensillae (vs. cephalic setae much longer than outer labia sensillae), and a posterior buccal cavity with three equal mandibles (vs. dorsal mandible reduced). Pseudocheironchus gen. nov. is also similar to Synonchiella in having three equal mandibles in the posterior buccal cavity, but differs from the latter in having a pharynx with anterior and posterior bulbs (vs. no pharyngeal bulb in Synonchiella ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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