Lanceola sphaerica Vinogradov 1970

• Main Author: Zeidler, Wolfgang
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Plantae; Chlorophyta; Chlorophyceae; Sphaeropleales; Characiaceae; Lanceola; Lanceola sphaerica; Amundsen Sea; Pacific; Southern Ocean; Kamchatka
• Online Access: https://zenodo.org/record/5656498; https://doi.org/10.5281/zenodo.5656498

Lanceola sphaerica Vinogradov, 1970 Lanceola clausi var. sphaerica Vinogradov 1957: 196, fig. 6. Lanceola sphaerica Vinogradov, 1970: 383, 386–388, figs 1–2.— Vinogradov et al. 1982 / 1996: 73–75 /84–86, fig. 20.—Zeidler 2009: 44–45, fig. 13.— Zeidler 2019: 514. Material examined. Southern Ocean: immature female (USNM 1090248), Amundsen Sea, Cruise 11, station 930 [70°08’S 109°48’W], 1,391 m, 19 January 1964 (figured here). SE Pacific: immature female (USNM 1089971), off Chilean coast near Valdivia, Cruise 6, station 326 [38°19’S 74°34’W], 1,691–2,072 m, 25 November 1962. Type material. Lanceola sphaerica was first described as a variety of L. clausi from two damaged specimens, a mature female (8 mm) and a male (9 mm), both caught in the Kurile-Kamchatka region of the North-West Pacific. The female from Vityaz station 2076 [43°39’N 149°24’E], 4,200 –7,800 m, 9 May 1953 and the male from Vityaz station 2208 [49°23’N 158°45’E], 0–6,500 m, 22 June 1953 (Vinogradov 1957). Later, Vinogradov (1970) established it as a full species with the availability of a well-preserved male (5.5 mm) from the same general area; Vityaz station 5626 [45°11’N 152°28’E], 3,000 –4,000 m, 23–24 August 1966. All three specimens are in the Zoological Museum of the Moscow State University (Mb–1051, 1052, 1053). Description of immature female 4.5 mm (Fig. 3). Pereonites 1–4 inflated, almost spherical. Head without rostrum. Eyes very small, reniform, without crystalline cones. A1 slightly longer than head and first pereonite combined. A2 as long as A1 with two long setae terminally. G1; basis relatively slender, slightly shorter than remaining articles combined; carpus length 0.5 x basis, distal margin width about 1.3 x proximal margin of propodus; propodus conical-shaped, length about 2 x proximal width; dactylus length almost 0.5 x propodus. G2 much longer and slenderer than G1; basis length about 0.7 x remaining articles combined, about 2 x carpus length; propodus gradually tapering to narrow distal margin, length about 1.4 x carpus; ...