Waldeckia obesa Chevreux 1905
Creators
Description
Waldeckia obesa (Chevreux, 1905)
(Fig. 25 c)
Charcotia obesa Chevreux, 1905: 163, fig. 3 (see De Broyer et al. (2007) for comprehensive synonymy and distribution). Orchomene arnaudi Bellan-Santini, 1972: 205, fig. 22.
Waldeckia robusta Ren & Huang, 1991: 255, 310, figs 44, 45.
Types. MNHN.
Type locality. Palmer Archipelago, Antarctica: Anvers Island, Biscoe Bay (64°50.0’S, 110 m) and Booth Island.
Diagnostic description. Head lateral cephalic lobe large, broad, subacute. Antenna 1 peduncular article 1 without anterodistal projection. Labrum, epistome and upper lip separate. Mandible palp article 2 anterodistal margin setose; article 3 with marginal and apical setae. Labium without apical stylets on each lobe. Gnathopod 1 parachelate; basis anterior margin with slender setae; propodus posterior margin smooth. Gnathopod 2 minutely subchelate; carpus long; propodus palm transverse, dactylus fitting palm. Pereopod 6 basis posteroventral margin rounded. Pereopod 7 basis, posterior margin almost straight, smooth, posteroventral margin rounded. Epimeron 3 posterior margin with strong spine above rounded posteroventral corner. Urosomite 1 with small dorsodistal acute spine. Uropod 1 outer ramus slightly longer than inner ramus; uropod 2 outer ramus slightly longer than inner ramus; uropod 3 inner ramus shorter than outer ramus, reaching article 2 of outer ramus.
Depth range. 0–1030 m.
Remarks. De Broyer et al. (2007) considered W. arnaudi (Bellan-Santini, 1972) and W. robusta Ren & Huang, 1991 to be a juveniles of W. obesa. We accept this decision. Waldeckia obesa differs from all other species (except W. tangaroa sp. nov.) in having a labrum with separate epistome and upper lip. It also differs from all other species of Waldeckia in having a strong spine above rounded posteroventral corner of epimeron 3. Distribution. Circum-Antarctic.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Lysianassidae
- Genus
- Waldeckia
- Kingdom
- Animalia
- Order
- Amphipoda
- Phylum
- Arthropoda
- Scientific name authorship
- Chevreux
- Species
- obesa
- Taxon rank
- species
- Taxonomic concept label
- Waldeckia obesa Chevreux, 1905 sec. Lowry & Kilgallen, 2014
References
- Chevreux, E. (1905) Diagnoses d'amphipodes nouveaux provenant de l'expedition antarctique du Francais. I. Lysianassidae. Bulletin de la Societe Zoologique de France, 30, 159 - 165, figs. 1 - 3.
- De Broyer, C., Lowry, J. K., Jazdzewski, K. & Robert, H. (2007) Catalogue of the Gammaridean and Corophiidean Amphipoda (Crustacea) of the Southern Ocean with distribution and ecological data. In: De Broyer, C. (Ed.), Census of Antarctic Marine Life: Synopsis of the Amphipoda of the Southern Ocean. Vol. 1. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Biologie, 77 (suppl. 1), pp. 1 - 325.
- Bellan-Santini, D. (1972) Invertebres marins des XIIeme et XVeme Expeditions Antarctiques Francaises en Terre Adelie. 10. Amphipodes Gammariens. Tethys, Suppl. 4, 157 - 238.
- Ren, X. & Huang, L. (1991) [Studies on Gammaridea and Caprellidea (Crustacea: Amphipoda) from the northwest waters of the Antarctic Peninsula]. Studia Marina Sinica, 32, 187 - 323.