Mimonectes alexanderi Zeidler 2012, sp. nov.

• Main Author: Zeidler, Wolfgang
• Format: Other/Unknown Material
• Language: unknown
• Published: 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Mimonectidae; Mimonectes; Mimonectes alexanderi; Pacific; North East Atlantic
• Online Access: https://zenodo.org/record/5257958; https://doi.org/10.5281/zenodo.5257958

Mimonectes alexanderi sp. nov. (Figs. 20–21) Material examined. Holotype. Female, 7.3 mm (ZMUC CRU-20421); north-east Atlantic, Bay of Biscay (46°28’N 08°01’W), Dana stn. 4158 XXII, 5500 mw, 18 June 1930. Mouthparts mounted on microscope slide; remainder in spirit. Allotype. Male, 5.3 mm (ZMUC CRU-20422); Indo-Pacific, Banda Sea (05°52’S 131°14’E), Dana stn. 3676 IX, 3000 mw, 23 March 1929. Paratypes. Female, 5.6 mm, with well-developed oostegites (ZMUC CRU-20423); central eastern Pacific, Gulf of Panama (06°48’N 80°33’W), Dana stn. 1208 VI, 2500 mw, 16 January 1922. Male, 4.3 mm, mature (SAMA C7015, ex. JAMSTEC); Sagami Bay, Japan (34°50’N 139°36’E), R/ V Kaiyo stn. IO60320A-3 (cruise KY 06–03), 700–800 m, col. D.J. Lindsay, 20 March 2006. Description of holotype (Fig. 20). Female, 7.3 mm; mature judging by the well-developed oostegites. Pereon moderately inflated, due to enlargement of pereonites 1–5. Antennae 1 (tip missing) about as long as head and first three pereonites combined (medially). Antennae 2 much reduced, consisting of four small articles. Gnathopod 1; basis almost as long as remaining articles combined; carpus broader and slightly longer than propodus, with broad distal margin; propodus with postero-distal corner produced into sharp process, as long as, and over-lapping dactyl; dactyl slender, length about 0.2x propodus. Gnathopod 2 slightly longer and more slender than G1; basis almost as long as remaining articles combined; carpus length about two-thirds propodus and slightly broader; propodus tapering distally with postero-distal projection as for G1; dactyl length slightly less than 0.2x propodus. Pereopods 3 & 4 similar in structure, with P3 marginally longer; merus relatively short, length about one-third basis, slightly less than twice ischium, or about half propodus, with antero-distal corner slightly produced forward; carpus sub-equal in length to propodus; dactyl slightly curved, length about 0.3x propodus. Pereopod 5 relatively short, about 0.8x P4; basis length slightly less than ...