Litarcturus kexueiae Liu & Sha, 2015, sp. nov.
Litarcturus kexueiae sp. nov. Figs 1–5 Material examined. Holotype, adult male (total length, 13.8 mm, without antennae), MBM 240861, Okinawa Trough (27 ° 40.300´N; 126 ° 54.174´E), RY0231, depth 2115 m, bottom sandy mud, coll. Zhongli Sha, by Agassiz trawl, 23 April 2014. Description. Body (Fig. 1...
| Main Authors: | , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2015
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| Subjects: | |
| Online Access: | https://zenodo.org/record/5672113 https://doi.org/10.5281/zenodo.5672113 |
| Summary: | Litarcturus kexueiae sp. nov. Figs 1–5 Material examined. Holotype, adult male (total length, 13.8 mm, without antennae), MBM 240861, Okinawa Trough (27 ° 40.300´N; 126 ° 54.174´E), RY0231, depth 2115 m, bottom sandy mud, coll. Zhongli Sha, by Agassiz trawl, 23 April 2014. Description. Body (Fig. 1 A–B) length 13.8 mm. Eyes rounded, large and protruding, 0.36 of lateral length of cephalothorax. Body long, slender, pereonite 1 fused with head; dorsal transverse ridge between cephalothorax and pereonite 1. Preocular spines absent; supraocular spines long, slender and directed anteriorly, unarmed, not covering the eyes in dorsal view, about 3.0 times as long as diameter of eye. Further dorsal spines are lacking. All pereonites unarmed, with rough cuticle. Pereonites 1–3 of about same length and width; pereonite 4 longest, slightly narrower than pereonites 1–3, of about the same width as pereonites 6–7; pereonite 5 slightly longer than pereonites 4 and 6–7. Tergites of pereonites 5–7 with concave posterior border into which the following segment fits when the animal bends dorsally. All pleonites fused with pleotelson, unarmed. Pleotelson length about 0.25 times body length, width about 0.5 of total pleotelson length, partly with small scattered tubercles. Posterolateral pleotelsonic spines strong and straight, unarmed, at 0.62 of pleotelson length, about 0.6 times as long as caudal part of pleotelson. Pleotelson apex prominent, triangular and caudally rounded. Antennula (Fig. 3 A): length 0.18 times body length, with 2 flagellar articles; peduncular article 1 broadest, 1.4 times longer than wide and shorter than second one, unarmed; article 2 longest, 1.2 times as long as article 1, unarmed; article 3 slightly shorter than article 2, unarmed; flagellar article 1 a very short ring with 1 lateral slender bristle; article 2 2.6 times as long as peduncular article 3, with 8 groups of 2 aesthetascs accompanied by several simple setae, apically 2 terminal simple setae and another 2 aesthetascs. Antenna (Fig. 3 B): ... |
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