Platytyphlops petrescui Gerken 2018, n. sp.

• Main Author: Gerken, Sarah
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Cumacea; Lampropidae; Platytyphlops; Platytyphlops petrescui; Weddell Sea; Weddell; Seta; Gam; Wittmann
• Online Access: https://zenodo.org/record/3799254; https://doi.org/10.5281/zenodo.3799254

Platytyphlops petrescui n. sp. (Fig. 63–64) Paralamprops serratocostatus.— Petrescu & Wittmann, 2003: 595. Type material. Holotype: ovigerous female, GAM CUM 13931, 73°2.4’S, 28°28.1’W. Weddell Sea. Other material. Subadult female, AM P66465, 33°2.6’S, 153°4.4’E, 3658 m. Diagnosis. Carapace without lateral ridges, marginal carina anterior half weakly dentate, ridge absent on pseudorostrum; densely covered with blunt tubercles dorsal of the marginal carina; eyelobe without lenses or tumidities. Antennule article 1 not expanded; accessory flagellum 1.0 main flagellum. Pereopod 5 very short, but with proportions as in pereopods 3 and 4. Telson 1.0 uropod peduncles, with 3 terminal setae, terminal setae equal. Uropod endopod article 1 1.6 length of articles 2 and 3 together. Adult male unknown. Description. Holotype ovigerous female, MGAB CUM 13931. Ovigerous female, 12.6 mm. Carapace covered with club–shaped tubercles dorsal of marginal carina, posterior dorsolateral expansion, anterior crest with spines, with row of long setae parallel to anterior margin of carapace, all thoracic and pleonite segments with club shaped tubercles covering dorsal surface; pseudorostral lobes 0.32 carapace length; eyelobe 0.06 carapace length, no lenses; carapace 1.4 times length of all pereonites together (Fig. 63 A–B). Antennule peduncle article 1 1.3 length article 2 and 3 together, with spines, 3 simple and 6 plumose setae; article 2 0.5 article 1 length, with 2 simple and 12 plumose setae; article 3 0.6 article 2 length, with 9 plumose setae; main flagellum of 6 articles, 0.75 peduncle length, with simple setae and 2 aesthetascs terminally; accessory flagellum equal to main flagellum, of 2 articles, with simple setae (Fig. 63C). Antenna of 4 articles; article 1 with 2 pappose setae; article 2 with 1 pappose seta; article 3 margin serrate, unarmed; article 4 2.0 length of article 2 and 3 together, with 2 pedunculate and 1 simple setae terminally (Fig. 63D). Mandible navicular, with 14 microserrate setae medially, lacinia ...