Acanthocope Beddard 1885
- Dataset
- Acanthocopinae (Crustacea: Isopoda: Munnopsididae) from the Southern Ocean deep sea with the description of Acanthocope eleganta sp. nov.
- Rank
- GENUS
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Isopoda
- family
- Munnopsidae
- genus
- Acanthocope
diagnosis
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
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).
materials_examined
Type species: Acanthocope spinicauda Beddard, 1885.
Name
- Homonyms
- Acanthocope Beddard 1885
- Acanthocope