Trischizostoma raschi Boeck 1861

• Main Authors: Freire, Pablo R., Serejo, Cristiana S.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lysianassidae; Trischizostoma; Trischizostoma raschi; Norway; North Atlantic
• Online Access: https://zenodo.org/record/6271766; https://doi.org/10.5281/zenodo.6271766

Trischizostoma raschi Boeck, 1861 (Fig. 4) Trischizostoma Raschii Boeck, 1861: 631. Trischizostoma Raschi — Sars, 1895: 31, pl. 120. Trischizostoma nicaeense — Stebbing, 1906: 13 (partim); Barnard & Karaman, 1991: 536, figs. 87 D, 89 O, 90 B, 91 H, 92 H, 93 C, 95 U (not T. nicaeense (Costa, 1853)); Gurjanova, 1951: 156, fig. 31 (not T. nicaeense (Costa, 1853)). Trischizostoma raschii — Sexton, 1908: 385, pl. 17, fig. 13; pl.18, 19, fig. 2–11; pl. 20; pl. 21, fig. 1 –13, 15– 18. Trischizostoma raschi — Diviacco & Ruffo, 1989: 559, fig. 383. Material examined. REVIZEE Program, R/V Thalassa col., stn. E­0507, 15 º 08.595' S, 038º 40.638 ' W to 15 º 07.158' S, 038º 40.542 ' W, 1026 m, 1 ovigerous female, 39 mm, MNRJ 15139. Stn. E­0535, 19 º 59.936 ' S, 039º 38.657 'W to 19 º 56.087 'S, 039º 35.408 W, 1002 m, 1 ovigerous female, 29 mm, MNRJ 19251. Stn. E­0523, 19 º 42.569 'S, 038º 32.030 ' W to 19 º 42.685 'S, 038º 36.961 ' W, 922 m, 1 ovigerous female, 27 mm, MNRJ 15145. Type locality. North Atlantic, off Norway coast. Diagnosis. Eyes well developed. Maxilliped palp with 4 articles and longer than outer plate. Gnathopod 1 propodus of triangular. Coxa 2 with anterior margin acute. Coxa 4 posteriorly excavated, with postero­ventral lobe. Telson emarginate. Description. Female, 29 mm (Fig. 4 A). Rostrum reaching halfway of first article of antenna 1 peduncle. Eyes well developed. Antenna 1, article 1 of peduncle more than twice length of articles 2–3 together; flagellum with 9 articles; callynophore present. Antenna 2, article 5 slightly longer than article 4. Mandibles with distal incisors; palp 3 ­ articulate with marginal setae. Maxilla 1, inner plate 1 / 3 of outer plate length; outer plate with 8 distal setae and palp attached medially. Maxilla 2, inner plate slightly shorter than outer plate; outer plate with 3 lateral setae. Maxilliped, inner plate shorter than outer plate; palp with 4 articles and longer than outer plate. Gnathopod 1 strongly subchelate (Fig. 4 B); coxa reduced and partially covered by ...