Eurycope monodon Mursch, Brenke & Wägele, 2008, sp. nov.
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...
Main Authors: | , , |
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Format: | Other/Unknown Material |
Language: | unknown |
Published: |
2008
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Subjects: | |
Online Access: | https://zenodo.org/record/5676886 https://doi.org/10.5281/zenodo.5676886 |
Summary: | 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 ... |
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