Araeosoma alternatum Mortensen 1934

• Main Author: Anderson, Owen F.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Echinoidea; Echinothurioida; Echinothuriidae; Araeosoma; Araeosoma alternatum; Auckland Islands
• Online Access: https://doi.org/10.5281/zenodo.5622890; http://treatment.plazi.org/id/275FE5736D50FFD48C99FB95FCC23F60

Araeosoma alternatum Mortensen, 1934 Figures 3 E, 4C, 29–31 A. coriaceum Döderlein 1906 Material examined —West Norfolk Ridge (Hiroshima seamount): 4 specimens (175, 112, 192 mm TD), 34° 22.6´S, 168° 25.1´E, 376–380 m, MV F168905. East coast Northland: 2 specimens (150, 124, mm TD), 34° 57.6´S, 175° 10.8´E, 581– 553 m, NIWA3519. Bay of Plenty: Tumokemoke seamount, 1 specimen (170 mm TD), 37° 28.1´S, 177° 7.0´E, 230–322 m, NIWA46084 (dry); 1 specimen, 37° 42.0´S, 176° 45.0´E, Te Papa EC763. East Chatham Rise: Diamond Head C, 3 specimens (172, 139, 130 mm TD), 44° 8.8´S, 174° 41.4´W, 440–600 m, NIWA53579; Diamond Head B, 2 specimens (155, 144 mm TD), 44° 9.0´S, 174° 45.4´W, 519–609 m, NIWA54042. Puysegur Bank: 1 specimen, 46° 40.0´S, 165° 42.0´E, Te Papa EC6607 (dry). Auckland Islands: 1 specimen (194 mm TD), 49° 1.0´S, 166° 32.9´E, 620–627 m, NIWA62822 (dry); 1 specimen (180 mm TD), 49° 7.3´S, 166° 41.8´E, 571–593 m, NIWA46089; 2 specimens (208, 208 mm TD), 49° 17.1´S, 166° 45.7´E, 618–622 m, NIWA65167; 2 specimens (230, 182 mm TD), 49° 28.2´S, 166° 37.2´E, 537– 531 m, NIWA61623 & NIWA66710; 4 specimens (215, 226, 181, 215 mm TD), 50° 58.0´S, 165° 45.0´E, 549 m, NIWA23728, NIWA29429, & NIWA29436; 1 specimen, 49° 55.3´S, 165° 59.7´E, Te Papa EC3983 (dry). Macquarie Ridge (Seamount 5): 1 specimen (159 mm TD), 51° 3.7´S, 161° 58.7´E, 385–498 m, NIWA39933. Tasmania: 1 specimen (205 mm TD), 44° 4.0´S, 146° 24.1´E, 470–524 m, MV F168937; 28 specimens, 44° 9.1´S, 147° 7.7´E, 800–950 m, AM J24562; 2 specimens, 44° 12.6´S, 147° 2.6´E, 1078– 593 m, AM J24542. Madagascar: 3 specimens (118, 120, 130 mm TD), 12° 51.0´S, 48° 8.0´E, 558 m, MNHN IE-2007-228. Unless stated, stored in 80% ethanol. Size range —The median test diameter of the 27 specimens measured was 173 mm, and the largest specimen was 230 mm TD. Remarks —Before this review, the only previously recorded specimen of A. alternatum was one collected by the German Deepsea Expedition of 1898–99 from off the southern coast of Somalia. In the report on the ...