Microphasma Woltereck 1909

• Main Author: Zeidler, Wolfgang
• Format: Other/Unknown Material
• Language: unknown
• Published: 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Microphasmidae; Microphasma; Antarctic; Southern Ocean; Pacific; Indian; Antarc*; Newfoundland; North Atlantic
• Online Access: https://zenodo.org/record/5328159; https://doi.org/10.5281/zenodo.5328159

Microphasma a gassizi Woltereck (Figs. 33 & 34) Microphasma agassizi Woltereck, 1909: 153–154, pl. 4, fig. 11. Pirlot 1929: 52. Stephensen & Pirlot 1931: 539–543, figs 15, 16. Pirlot 1939: 17. Shoemaker 1945: 218–219, fig. 23. Vinogradov 1957: 205; 1960a: 217–218; 1964: 126; 1970: 385 (table). Vinogradov et al. 1982: 105–107, fig 41. Vinogradov 1990: 51. Vinogradov & Semenova 1996: 617. Browne et al. 2007: 819 (table), fig. 4. Type material. The unique female holotype could not be found in any major European museum or in the USNM and is considered lost. The type locality is detailed above. Material examined. North Atlantic: Male, two females (USNM); near Bermuda, 800–1000 fathoms, 1929–1931. Female (ZMUC); S. of Newfoundland [40º15’N 50º37’W]; Michael Sars Stn. 67, 1200 m, 27 Jun. 1910. Female (ZMUC CRU-9934); S.W. of Cape Verde Is. [12°11’N 35°49’W]; Dana Stn. 1165 VII, 4000 mw, 9 Nov. 1921. South Atlantic: Female (ZMUC); off Gabon [04°00’S 08°25’E]; Galathea Stn. 66, 6300 mw, 5 Dec. 1950. Indian Ocean: Female (ZMUC CRU-9933); S. of Sri Lanka [05°21’N 80°38’E]; Dana Stn. 3909 IV, 3000 mw, 22 Nov. 1929. Southern Ocean: Female (USNM); between S. America & Antarctic Pen. [59°29’– 59°39’S 68°01’– 68°31’W]; Eltanin Stn. 247, 1830 m, 5 Oct. 1962. Female (USNM); south-eastern Pacific sector of Antarctic [60°00’– 60°18’S 82°40’– 82°41’W]; Eltanin Stn. 782, 3074m, 20 Oct. 1962. Diagnosis. Body length of females up to 9.0 mm, of males up to 8.0 mm. Antennae 1 with peduncular articles and callynophore relatively broader and longer in males; terminal article elongate, slightly longer than preceding two articles combined. Antennae 2 length 0.8x A1 for females, slightly less for males; antennal gland grossly inflated, slightly deeper than long, almost as long as following articles combined. Gnathopod 1; basis slightly shorter than remaining articles combined; dactylus slightly curved, length about 0.6x propodus. Gnathopod 2; length about 1.3x G1; basis as long as remaining articles combined (excluding ...