Trischizostoma raschi Boeck 1861

• Main Authors: Freire, Pablo R., Serejo, Cristiana S.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lysianassidae; Trischizostoma; Trischizostoma raschi; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.6271766; http://treatment.plazi.org/id/03A012206C02807FD033FD9C9244FC4A

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. 87D, 89 O, 90B, 91H, 92H, 93C, 95U (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, 15º 08.595' S, 038º 40.638' W to 15º 07.158' S, 038º40.542' W, 1026 m, 1 ovigerous female, 39 mm, MNRJ 15139. Stn. E­0535, 19º 59.936' S, 039º 38.657'W to 19º 56.087'S, 039º 35.408 W, 1002 m, 1 ovigerous female, 29 mm, MNRJ 19251. Stn. E­0523, 19º 42.569'S, 038º 32.030' W to 19º 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 coxa 2; propodus inverted, ...