Figorella tanidea J. L. Barnard 1962

• Main Authors: Lowry, J. K., Stoddart, H. E.
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Pakynidae; Figorella; Figorella tanidea; Antarctic; Southern Ocean; Weddell Sea; New Zealand; Weddell; Seta; Lowry; East Scotia Basin; Antarc*; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.5281/zenodo.5251225; https://zenodo.org/record/5251225

Figorella tanidea J.L. Barnard, 1962 Figorella tanidea J.L. Barnard, 1962: 25, figs 7, 8. ― Lowry & Bullock, 1976: 90. ― Lowry, 1984: 92, figs 31–33. ― Barnard & Karaman, 1991: 487. ― De Broyer & Jazdzewski, 1993: 68. ― Gutt et al ., 2000: 80, 83. ― De Broyer et al ., 2007: 157. Diagnostic description. Head lateral cephalic lobe large, narrowly rounded; ventral margin curved. Antenna 1 peduncular article 1 without posterodistal spine; accessory flagellum probably 2-articulate [see Remarks], article 1 short; flagellum without callynophore in specimen of unknown sex. Mandible lacinia mobilis a simple robust seta; lamina dentata absent; accessory setal row present, not on raised setose ridge; molar absent; palp attached slightly distally; palp article 2 broad, as long as article 3; article 3 not distally tapered, with anterior margin convex. Maxilla 1 outer plate with 10 setal-teeth in 4/6 arrangement, setal-teeth smooth; palp well developed, 2-articulate , with apical slender setae. Maxilliped inner plate small; outer plate large; palp 4-articulate, article 4 large. Gnathopod 1 chelate; ischium smaller than propodus, not swollen posteroproximally; carpus extremely compressed; propodus length about 1.9 × breadth, posterior margin well developed, posterodistal corner of palm not attenuated , corner of palm with simple robust seta; dactylus reaching to corner of palm. Gnathopod 2 palm minute, transverse. Pereonite 4 without dorsal spines. Pereonite 5 without dorsal spines. Pereopod 5 merus without posteroproximal shoulder. Pereopod 6 basis with posteroventral lobe weakly produced; merus as broad as long, with posteroproximal shoulder. Pereopod 7 basis subovate with posterior margin weakly dentate. Epimeron 3 posterior margin without projections, posteroventral corner broadly rounded . Uropod 3 biramous, inner ramus extending more than halfway along outer ramus but not reaching base of article 2. Telson [length to breadth not known], entire. Remarks. Figorella tanidea is the only species of Figorella with what appears to be a 1-articulate accessory flagellum; all other species have a 2-articulate accessory flagellum on antenna 1. However, we cannot be certain that a second article has not been broken off –the one article present is quite broad, as in article 1 of other species. Figorella tanidea is one of three species that have an unusual number of setal-teeth (5 or 6) on the inner row of maxilla 1 outer plate. Distribution. East Scotia Basin, South Atlantic Ocean and Weddell Sea; 446–3770 m depth. : Published as part of Lowry, J. K. & Stoddart, H. E., 2012, The Pachynidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea) 3246, pp. 1-69 in Zootaxa 3246 (1) on pages 30-31, DOI: 10.11646/zootaxa.3246.1.1, http://zenodo.org/record/5249007 : {"references": ["Barnard, J. L. (1962) South Atlantic abyssal amphipods collected by R. V. Vema. Abyssal Crustacea. Vema Research Series, 1, 1 - 78.", "Lowry, J. K. & Bullock, S. (1976) Catalogue of the marine gammaridean Amphipoda of the Southern Ocean. Bulletin of the Royal Society of New Zealand, 16, 1 - 187.", "Lowry, J. K. (1984) Systematics of the pachynid group of lysianassoid Amphipoda (Crustacea). Records of the Australian Museum, 36 (2), 51 - 105.", "Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13 (2), 419 - 866.", "De Broyer, C. & Jazdzewski, K. (1993) Contribution to the marine biodiversity inventory. A checklist of the Amphipoda (Crustacea) of the Southern Ocean. Documents de Travail de l'Institut Royal des Sciences Naturelles de Belgique, 73, 1 - 154.", "Gutt, J., Sirenko, B. I., Arntz, W. E., Smirnov, I. S. & De Broyer, C. (eds) (2000) Biodiversity of the Weddell Sea: macrozoobenthic species (demersal fish included) sampled during the expedition ANT XIII / 3 (EASIZ I) with RV \" Polarstern \". Berichte zur Polarforschung, 372, 1 - 103.", "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: C. De Broyer (ed.) Census of Antarctic Marine Life: Synopsis of the Amphipoda of the Southern Ocean. Volume 1. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Biologie, 77, Supplement 1 (1), 1 - 325."]}