Microphasmoides vitjazi Vinogradov 1960
Creators: name: Zeidler, Wolfgang
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Microphasmidae
Microphasmoides
Microphasmoides vitjazi

description: <i>Microphasmoides vitjazi</i> Vinogradov (Figs 35 &amp; 36) <i>Microphasmoides vitjazi</i> Vinogradov, 1960a: 214–217, figs 9–11. Vinogradov 1964: 125–126. Vinogradov <i>et al</i>. 1982: 107–109, figs 42, 43. <b>Type material.</b> The holotype is in the ZMMU (Mb–1060) as detailed above. <b>Material examined. North Atlantic</b>: Female (ZMUC); Caribbean Sea [17°54’N 64°54’W]; <i>Dana</i> Stn. 1186 III, 3000 mw, 30 Nov. 1921. <b>South Pacific</b>: Two males, two females (ZMUC CRU-9935); west of Galapagos Is. [00°18’S 99°07’W]; <i>Dana</i> Stn. 3558 II, 3000 mw, 18 Sept. 1928. Female (ZMUC); N. of Tahiti [14°01’S 147°51.5’W]; <i>Dana</i> Stn. 3570 II, 3000 mw. 7 Oct. 1928. Female (ZMUC); N. of New Zealand [25°47’S 172°24’E]; <i>Dana</i> Stn. 3621 III, 3000 mw, 8 Dec. 1928. <b>Diagnosis.</b> Body length of females up to 8.0 mm, of males up to 6.0 mm or slightly more. Antennae 1; peduncular articles and callynophore relatively broader and longer in males; terminal article elongate, slightly longer than preceding article in males, slightly shorter in females. Antennae 2 slightly shorter than A1 for females, about 0.8x A1 for males; antennal gland grossly inflated, slightly deeper than long, about as long as following articles combined. Gnathopod 1; basis slightly shorter than remaining articles combined; dactylus slightly narrowed, length about half propodus. Gnathopod 2: length about 1.4x G1; basis marginally longer than remaining articles combined (excluding dactylus); dactylus length about 0.4x propodus. Pereopods 3 &amp; 4 similar in structure but P4 is slightly longer; both longer and stronger than any other pereopoda. Pereopod 4; basis length about twice merus; carpus length twice merus; propodus length 1.4x carpus; dactylus length about one third propodus. Pereopod 5 strongly subchelate with propodus and dactylus rotated at right angles to body; length about 0.6x P4; basis length 1.7x merus; carpus length about 0.8x merus; propodus length about 1.5x carpus, relatively broad forming subchela with dactylus, anterodistal margin with several pairs of short, strong setae; dactylus curved, slightly longer than width of propodus. Pereopod 6 slightly longer than P5; basis length about twice merus; carpus marginally longer than merus; propodus length almost twice carpus; dactylus length 0.4x propodus. Pereopod 7; length 0.8x P6; basis length 2.5x merus; carpus length 1.4x merus; propodus length about 1.7x carpus; dactylus length slightly less than half propodus. Peduncle and rami of uropoda relatively narrow, lanceolate; margins of rami denticulate. Telson triangular, rounded, length about half peduncle of U3. Colour of unfixed specimens is cherry-red (Vinogradov 1960a). <b>Remarks.</b> This is a distinctive but relatively rare species with only three previous records of specimens collected. It is similar to <i>Microphasma agassizi</i> differing mainly in the structure of pereopods 3–5. The current material examined comprises two males and five females. This is the first record of males <b>Distribution.</b> Vinogradov <i>et al</i>. (1982) record this species from the tropical regions of the Pacific and Indian Oceans near the Philippines (Vinogradov 1964), New Hebrides (Vinogradov 1960a) and Japanese deep-water trenches (presumably a new record). It is here recorded from the North Atlantic (Caribbean Sea) for the first time together with additional records from the South Pacific. According to Vinogradov <i>et al</i>. (1982) it has been found in catches of 500–2000 m and in catches from depths of 1700 and more to the surface. The <i>Dana</i> specimens were all caught with 3000 mw.
description: Published as part of <i>Zeidler, Wolfgang, 2009, A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea), pp. 1-117 in Zootaxa 2000</i> on pages 93-96
description: {"references": ["Vinogradov, M. E. (1960 a) Hyperiidea Physosomata of the Tropical Pacific Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR 41, 198 - 247. [In Russian].", "Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR 65, 107 - 151. [In Russian].", "Vinogradov, M. E., Volkov, A. F. &amp; Semenova, T. N. (1982) Amfipody-Giperiidy (Amphipoda: Hyperiidea) Mirovogo Okeanea. Akademiya Nauk SSSR, Opredeliteli po Faune SSSR No. 132. Leningrad, 492 pp. [In Russian]. English translation, 1996, Smithsonian Institution Libraries, Washington D. C., D. Siegel-Causey, Scientific Editor."]}