Acanthocope Beddard 1885
Creators
Description
Acanthocope Beddard, 1885
Acanthocope Beddard, 1885: 922; 1886: 78; Menzies, 1956: 2; 1962: 152; Wolff, 1962: 110; Chardy, 1972: 386; Malyutina, 1998: 343 –346; 1999: 288–289.
Type species: Acanthocope spinicauda Beddard, 1885.
Diagnosis: Head without dorsal spines, interantennular distance more than half as wide as head, frontal margin sloping, nearly straight from above. Lateral margins of pereonites 1–4 rounded; natasome completely fused, pereonites 5–7 with lateral spines; pleotelson with 2 pairs of lateral spines and 1 terminal spine. Antenna 1 article 1 without spines, flagellum short, with 3–4 articles in females and long, multiarticulated in males; antenna 2 articles 1 and 2 fused without suture; article 2 with distomedial spine, article 3 without squama, with distomedial and distolateral spines; mandibular palp absent or with 1 or 2 articles, if of 3 articles, thin, with last article elongate and straight; maxillipedal palp article 2 largest, with expanded lateral margin, article 3 narrower, triangular. Pereopods 1–4 similar, slender; coxa of pereopod 1 short and rounded, coxae of pereopods 2–4 elongate, projected into anterior spines; pereopods 5–7 with rather narrow crescentshaped carpi and elongate oval propodi, smaller than carpi; dactyli without dorsal unguis, with 2–3 long distodorsal setae. Male pleopods 1 and 2 forming domelike operculum; pleopods 1 half or less as long as pleopods 2, covering basal gap between pleopods 2, like a deeplykeeled boat; pleopods 2 with ventral projection near midlength of protopod, endopod and exopod inserting at basal part of protopod. Uropods cylindrical, elongate, uniramous or with tiny exopod.
Distribution: Most species of Acanthocope are known only from the type locality and from a single specimen. Only three species are known from the Northern Hemisphere: two from the north Atlantic (54–56 N, 2456–3465 m) and one from the northwest Pacific (44 N, 4690–4720 m). All other species were found from tropical latitudes to the Southern Ocean: western Atlantic (17 N, 1224 m), 1 species; eastern Pacific (5 N–42 S, 2650– 3670 m), 3 species; southwest Pacific (29 S, 3400 m), 1 species; northwest Indian Ocean (13 N, 1830 m), 1 species; southeast Indian Ocean (50 S, 3290 m), 1 species; and south Atlantic (16 S–65 S, 3760–5585 m), 7 species. Only A. galatheae Wolff, 1962 is widely distributed, known from the Gulf of Panama of the east Pacific (5 49’ N 78 52’W, 3270– 3670 m) and the south Atlantic (16 13.3’S 0 5 26.8’E – 31 24.8’S 0 1 50’W, 4725–5585 m). The new record of the species from the Antarctic abyssal (64–66 S, 39–43°W, 4647–4778 m) lies between these two localities. A new locality is recorded for A. annulatus Menzies, 1962 which was described from 4885 m southwest of Cape Town (36°34’S 14°08’E), the new specimens were found near the Antarctic Peninsula (59°40’S, 57°35’W, 3689 m). For locations of all species of Acanthocope see distribution map (Fig. 1).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Munnopsidae
- Genus
- Acanthocope
- Kingdom
- Animalia
- Order
- Isopoda
- Phylum
- Arthropoda
- Scientific name authorship
- Beddard
- Taxon rank
- genus
- Taxonomic concept label
- Acanthocope Beddard, 1885 sec. Malyutina & Brandt, 2004
References
- Beddard, F. E. (1885) Preliminary notice of the Isopoda collected during the voyage of H. M. S. ' Challenger' - Part II. Munnopsidae. Proceedings of the Zoological Society of London, 1885, 916 - 925.
- Wolff, T. (1962) The systematics and biology of bathyal and abyssal Isopoda Asellota. Galathea Reports, 6, 1 - 320.
- Chardy, P. (1972) Le genre Acanthocope (Isopode, Asellote): description de deux especes nouvelles. Remarques taxonomiques et biogeographiques. Bulletin Mensuel de la Societe Linneenne de Lyon, 36, 379 - 393.
- Malyutina, M. V. (1998) Acanthocope mendeleevi: a new species of Munnopsidae (Crustacea, Isopoda, Asellota) from the New Caledonia Basin. Russian Journal of Marine Biology, 24 (5), 343 - 347.
- Menzies, R. J. (1962) The isopods of abyssal depths in the Atlantic Ocean. Vema Research Series, 1, 79 - 206.