Macrostylidae Hansen 1916

• Main Author: Brandt, Angelika
• Format: Text
• Language: unknown
• Published: Zenodo 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Macrostylidae; Antarctic; The Antarctic; Seta; Menzies; Christiania; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.6272962; https://zenodo.org/record/6272962

Macrostylidae Hansen, 1916 Macrostylis Sars, 1864: 13. —Beddard, 1886: 173. — Hansen, 1916: 75. — Wolff, 1956: 99. — Wolff, 1962: 91. — Menzies, 1962: 128. — Brandt, 1992: 69. — Mezhov, 1992: 83; 2000: 69; 2002: 3. Type species: Macrostylis spinifera Sars 1864 (by monotypy). Diagnosis : Body elongate, at least 3.0 as long as broad. Head broader than long. Antennule short or minute with 3–5 articles, with at least one thick distal aesthetasc, often more. Last peduncular article of antenna distally with one broom seta. Pars incisiva of mandibles slender, narrow, with 1–3 cusps, lacinia mobilis of left mandible very small, pars molaris with many setae at apex. Maxilliped palp of 5 articles, epipod long­oval, slen­ der, distally rounded. Pereopods subsimilar, pereopod 3 with ischium bearing large dorsal triangular lobe, with at least one stout, acute dorsal spine; pereopod 4 shortest. Female operculum oval, with setae at caudal tip; covering anus. Pleopod 5 present, uniramous. Uropod uniramous, ramus length one­third of sympod, distally with broom and sensory setae. Gender feminine. Remarks : The diagnosis of Macrostylis is revised drawing from earlier the diagnoses and descriptions of Sars (1864), Wolff (1956, 1962) and Brandt (1992) as well as the new species described here. Sars (1864) gave a Latin diagnosis for the monotypic genus, comparing Macrostylis to Eurycope , and pointed out that the typical shape of the posterior pereopods of Eurycope (swimming legs) were not present in Macrostylis . He also noted that species Macrostylis are smaller in size than those of Eurycope . In the following diagnoses, only the supposed autapomorphic characters of the species are presented. : Published as part of Brandt, Angelika, 2004, New deep­sea species of Macrostylidae (Asellota: Isopoda: Malacostraca) from the Angola Basin off Namibia, South West Africa, pp. 1-35 in Zootaxa 448 on page 2, DOI: 10.5281/zenodo.157627 : {"references": ["Hansen, H. J. (1916) Crustacea Malacostraca 3.5. The Danish Ingolf Expedition, 3, 1 - 162.", "Sars, G. O. (1864) On en anomal Gruppe af Isopoder. Forhandlinger i Videnskabs-Selskabet i Christiania, 1863, 1 - 16.", "Wolff, T. (1956) Isopoda from depths exceeding 6000 m. Galathea Reports, 2, 85 - 157.", "Wolff, T. (1962). The systematics and biology of bathyal and abyssal Isopoda Asellota. Galathea Reports, 6, 1 - 320.", "Menzies, R. J. (1962) The isopods of abyssal depths in the Atlantic Ocean. In: Barnard, J. L., Menzies, R. J. & Bacescu, M. C. (Eds) Abyssal Crustacea. Columbia University Press, New York, pp. 79 - 206.", "Brandt, A. (1992) New Asellota from the Antarctic deep sea (Crustacea, Isopoda, Asellota), with descriptions of two new genera. Zoologica Scripta, 21, 57 - 78.", "Mezhov, B. V. (1992) Two new species of the genus Macrostylis G. O. Sars, 1864 (Crustacea Isopoda Asellota Macrostylidae). Arthropoda Selecta, 1 (2), 83 - 87."]}