Pseudoleptostyloides marinamalyutinae Mühlenhardt-Siegel & Lavrenteva, 2015, n. sp.

• Main Authors: Mühlenhardt-Siegel, Ute, Lavrenteva, Anna V.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Cumacea; Diastylidae; Pseudoleptostyloides; Pseudoleptostyloides marinamalyutinae; Pacific; Kamchatka
• Online Access: https://zenodo.org/record/5625067; https://doi.org/10.5281/zenodo.5625067

Pseudoleptostyloides marinamalyutinae n. sp. (Figs 13–16) Material. Holotype ovigerous female, ZMH: K 44243; (coll. 23 Aug. 2012). Type locality. NW Pacific, Kurile Kamchatka abyssal plains, 40 ° 35,48' N 150 ° 59,92' E, 5399–5408 m depth, cruise 223 with RV “Sonne” (KuramBio), station # 9 - 9, (EBS # 15 -S), gear: epibenthic sledge. Paratypes: # 12 - 4: 1 ovigerous female (pleon broken off), 3 preparatory females, 4 mancas; ZMH: K 44244; # 8- 9: 1 carapace and thoracic segments; ZMH: K 44245; # 8-9: 1 male, broken after Pl1, 2 preparatory small females; ZMH: K 44246; # 9 - 9: 1 ovigerous female, 1 manca; ZMH: K 44247. # 9-12: 1 preparatory female (7.8 mm), dissected; ZMH: K 44248. Telson (postanal part) not yet as long as in ovigerous female holotype. Additional material. # 2-9: 1 carapace and thoracic segments; MIMB 29189; # 2-9: 1 preparatory female; MIMB 29190; # 9 - 9: 1 preparatory female; MIMB 29191. Etymology. The new species is dedicated to our very much esteemed colleague and dear friend Marina Malyutina Ph. D., a highly reputated taxonomist for Isopoda (Crustacea, Peracarida), especially for the family Munnopsidae. Diagnosis. Battlement-like crenulated ridges start at the basis of the pseudorostrum, the upper part runs laterally from the frontal lobe directing to the dorsal middle behind the frontal lobe, the ridges from the left and right side do not meet dorsally but run almost parallel towards the posterior margin of the carapace, bending ventrally and running along the posterior, ventral and anteroventral margins of the carapace to meet the point of origin. A second, shorter ridge links the first ridge from antennal notch region to level of frontal lobe fissure end, which is the widest part of the first ridge seen from above. Uropods long and slender; peduncle as long as pleonites 4 to 6 combined, with 16 cuspidate setae along inner margin. Uropod exopod much longer than tri-articulated endopod. Telsonic subterminal setae not of same length as the terminal; between two strong terminal setae a ...