Eurycope monodon Mursch, Brenke & Wägele, 2008, sp. nov.

• Main Authors: Mursch, Andre, Brenke, Nils, Wägele, Johann Wolfgang
• Format: Other/Unknown Material
• Language: unknown
• Published: 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Munnopsidae; Eurycope; Eurycope monodon; Seta; Monodon monoceros; narwhal*
• Online Access: https://zenodo.org/record/5676886; https://doi.org/10.5281/zenodo.5676886

Eurycope monodon sp. nov. Material examined Holotype (ZMH K­ 41791), male (2.14 mm), Angola Basin, 17 06.2’ S, 4 41.7 ’ E to 17 07.5’ S, 4 42.3 ’ E; Station No. 344, expedition M 48: 1 RV “ Meteor ”. Paratype (ZMH K­ 41792), female (2.25 mm), same locality. Additional material: 10 males, 10 females (ZMH K­ 41793 ­ K­ 41796) Etymology Named after Monodon monoceros Linné, 1758 (narwhal) referring to its long rostral seta. Diagnosis Eurycope with overhanging rostrum bearing a shallow frontal depression with a conspicuous long anteromedian spine­like seta. Lateral margins of head almost parallel, only slightly converging anteriorly. Each lateral side with 3 stout spine­like setae nearly forming a horizontal line. Pereonites of ambulosome equally shaped, caudally increasing in width. Pereonites of natasome decreasing in width from pereonite 5 to pereonite 7, pereonite 6 two thirds the length of the subequally long pereonites 5 and 7, the latter with straight posterior margin. Lateral edge of pleotelson straight in lateral view, caudal end not angled ventrally at insertion of uropods. Antenna 1 article 1 with flat distomedial lobe reaching two thirds of the following article’s length. Distolateral lobes of male pleopod 1 with large, cranially curved cusp. Description of male holotype Body (Fig. 1): Longishly oval, slightly flattened dorsoventrally, length: width = 2.33. Body width evenly increasing from head to pereonite 5. Natasome with roundly triangulate pleotelson, slightly shorter than three quarters of body length. Body height between head and ambulosome almost constant; about 0.2 times body length, at caudal half of pereonite 5 increased (0.24 times body length), flattening posteriorly. Anterodorsal parts of head, tergites of pereonites 1 to 4 and all sternites showing fine texture of parallel cuticular grooves. Head (Fig. 1; Fig. 2 a): Length: width = 0.55, slightly narrower than pereonite 1, lateral sides with 3 stout spine­like setae nearly forming a horizontal line. Conspicuous anterolateral vault at base ...