Alexandrella

• Main Author: Serejo, C. S.
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Stilipedidae; Alexandrella; Antarctic; Mid-Atlantic Ridge; Charcot; Chevreux; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.6139042; https://zenodo.org/record/6139042

Key to the species of Alexandrella (modified from Berge & Vader 2005) 1. Pereonite 7 dorsally with a strong pointed tooth, mandibular incisors smooth........ Alexandrella australis (Chilton, 1912) – Pereonite 7 dorsally smooth, mandibular incisors fully or partly toothed......................................... 2 2. Gnathopods 1 and 2 subchelate........................................................................... 3 – Gnathopods 1 and 2 simple.............................................................................. 4 3. Maxilla 1 outer plate with 26 setal teeth; gnathopods 1–2 lacking facial setae; pleonites 1–2 dorsally with weak ridge, pleonite 3 with low rounded tooth...................................... Alexandrella subchelata Holman and Watling, 1983 – Maxilla 1 outer plate with 40–45 setal teeth; gnathopods 1–2 densely setose; pleonites 1–3 dorsally with a well developed pointed tooth................................................................... Alexandrella setosa sp. nov. 4. Pleonites 1–3 strongly toothed, female pereopod 1 with oostegite................................................ 5 – Pleonites 1–3 weakly toothed, female pereopod 1 without oostegite.............................................. 6 5. Right mandible with lacinia mobilis reduced to a simple tooth............. Alexandrella mandibulata Berge & Vader, 2005 – Right mandible with lacinia mobilis broad and toothed, but smaller than left one... Alexandrella martae Berge & Vader, 2005 6. Mandibular incisors not toothed along the entire margin, antennae subequal.......... Alexandrella dentata Chevreux, 1912 – Mandibular incisors toothed along the entire margin, antenna 1 shorter than antenna 2......................................................................................... Alexandrella inermis Bellan-Santini & Ledoyer, 1986 : Published as part of Serejo, C. S., 2014, A new species of Stilipedidae (Amphipoda: Senticaudata) from the South Mid- Atlantic Ridge, pp. 133-140 in Zootaxa 3852 (1) on page 139, DOI: 10.11646/zootaxa.3852.1.6, http://zenodo.org/record/229401 : {"references": ["Berge, J. & Vader, W. (2005) The amphipod genus Alexandrella (Amphipoda, Stilipedidae): taxonomic status, allometric growth and description of two new species. Journal of Natural History, 39 (17), 1327 - 1346. http: // dx. doi. org / 10.1080 / 00222930400015566", "Chilton, C. (1912) Amphipoda of the Scottish National Antarctic Expedition. Transactions of the Royal Society of Edinburgh, 48, 454 - 519.", "Holman, H. & Watling, L. (1983) A revision of the Stilipedidae (Amphipoda). Crustaceana, 44, 27 - 53. http: // dx. doi. org / 10.1163 / 156854083 x 00037", "Chevreux, E. (1912) Deuxieme Expedition dans l'Antarctique, dirige\u00b4e par le Dr. Charcot, 1908 - 1910. Diagnoses d'amphipodes nouxeaux. Bulletin du Museum d'Histoire Naturelle, 18, 208 - 218.", "Bellan-Santini, D. & Ledoyer, M. (1986) Gammariens (Crustacea, Amphipoda) des iles Marion et Prince Edward. Campagne MD 0 8 du MS Marion Dufresne en 1976. Bolletino del Museo Civico di Storia Naturale di Verona, 13, 349 - 435."]}