Acidostoma laticorne Sars, 1879

Stoddart, H. E. & Lowry, J. K., 2012, Revision of the lysianassoid genera Acidostoma and Shackletonia (Crustacea: Amphipoda: Acidostomatidae fam. nov.), Zootaxa 3307 (1), pp. 1-34 : 9-10

Acidostoma laticorne Sars, 1879

( Figs 6–8 )

Acidostoma laticornis Sars, 1879: 440 .

Acidostoma laticorne . Sars, 1885: 152, pl. 13, fig. 3. ― Sars, 1886: 44. ― Stebbing, 1906: 14. ― Shoemaker, 1930: 1, fig. 1. ― Stephensen, 1932: 353 (in part). ― Schellenberg, 1935: 11. ― Stephensen, 1935: 31 (key), 32. ― Stephensen, 1942: 470. ― Stephensen, 1944: 15 (in part). ― Gurjanova, 1951: 158, fig. 33. ―J.L. Barnard, 1958: 88. ― Gurjanova, 1962: 55 (key). ― Dahl, 1964: 50 (key), 52, figs 8–11. ― Gurjanova, 1964: 269. ― Bousfield, 1973: 287 (list). ― Watling, 1979: 265 (table 1). ― Vader, 1984: 144. ― Barnard & Karaman, 1991: 457. ― Palerud & Vader, 1991: 32. ― Tzvetkova & Golikov, 2001: 88.

Acidostoma obesum . Sars, 1886: 44. ― Stephensen, 1932: 353 (in part, Arctic record of Sars 1886)

not Acidostoma laticorne . ― Meinert, 1890: 157 (= A. nodiferum ). not Acidostoma laticorne . ― Della Valle, 1893: 782, pl. 6 fig. 12, pl. 28 figs 1–21. ― Chevreux & Fage, 1925: 30, figs 7, 8. (=

A. neglectum ).?not Acidostoma laticorne . ― Stephensen, 1923b: 10. ― Stephensen, 1929: 52, fig. 14/15. ― Clark & Milne, 1955: 178 (list).

― Oldevig, 1959: 5. ― Harmelin, 1964: 59 b, table 1. ―Toulmond, 1964: 321. ― Toulmond & Truchot, 1964: 5. ―Bellan-

Santini & Ledoyer, 1973: 918. ― Ledoyer, 1977: 372. ― Macquart-Moulin, 1984: 185. (probably = A. neglectum ).

Material examined. HOLOTYPE, male, 9.5 mm, ZMO F1777 , west of Lofoten , Norwegian Sea , 68°6’N 9°44’W, 1159 m, 9 August 1877, Voringen , Norwegian North-Atlantic Expedition stn 251. — One ovigerous female, 14 mm, ZMO F1778 , off Storeggen, Norwegian Sea, 63°10’N 5°0’E, 763 m, sabulous clay, 29 June 1876, Voringen, Norwegian North-Atlantic Expedition stn 31.

Diagnostic description. Mandible molar a small non-setose triangular flap. Maxilla 1 palp small, 1-articulate, without apical setae. Maxilliped inner plate well developed; outer plate without subapical notch. Gnathopod 2 dactylus reaching corner of palm. Pereopods 5 and 6 merus broader than long. Epimeron 3 posteroventral corner produced into a spine. Uropod 1 peduncle dorsolateral margin with less than 10 robust setae. Uropod 2 peduncle dorsolateral margin not castellate, without setae. Uropod 3 reaching to about the end of the peduncle of uropod 2; rami shorter than peduncle, without plumose setae; outer ramus article 2 small. Telson broader than long, emarginate.

Distribution. North Polar Sea, Norwegian Sea, Greenland Sea, western North Atlantic Ocean; 75–1159 m depth.

Figures

FIGURE 6. Acidostoma laticorne Sars, holotype, male, 9.5 mm, ZMO F1777, west of Lofoten, Norwegian Sea.

FIGURE 7. Acidostoma laticorne Sars, holotype, male, 9.5 mm, ZMO F1777, west of Lofoten, Norwegian Sea. Scales represent 0.2 mm.

FIGURE 8. Acidostoma laticorne Sars, holotype, male, 9.5 mm, ZMO F1777, west of Lofoten, Norwegian Sea. Scale for U3 represents 0.1 mm, remainder represent 0.5 mm.