Valettiopsis Holmes 1908

• Main Author: Horton, Tammy
• Format: Text
• Language: unknown
• Published: Zenodo 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Valettiopsidae; Valettiopsis; Thurston; North Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.5252473; https://zenodo.org/record/5252473

Key to the species of Valettiopsis 1 Pereon segments 5–7 and pleon segments 1–3 dentate dorsally.. V. multidentata – Pereon segments 5–7 and pleon segments 1–3 smooth dorsally....... 2 2 Gnathopod 2 propodus robust, expanded, with concave palm, dactyl not reaching palm edge (figure 6)............... V. macrodactyla – Gnathopod 2, propodus not as above.............. 3 3 Gnathopod 2, carpus elongate (length more than twice breadth), slender, distinctly longer than propodus (figure 3)................. 4 – Gnathopod 2, carpus not elongate (length less than twice breadth) or slender, only slightly longer than propodus (figure 9).............. 6 4 Gnathopods 1 and 2, propodus with palms strongly oblique, urosome 1 tooth reduced, distal article of uropod 3 outer ramus very short (1/13 of proximal article) V. ruffoi – Characters not as above................... 5 5 Gnathopod 2, propodus tapering distally, palm transverse, dactyls on pereopods 3–7 curved (figure 1).................. V. dentata – Gnathopod 2, propodus not tapered, palm oblique; dactyls on pereopods 3–7 elongate, straight (figure 3).............. V. longidactyla 6 Urosome 1 tooth distinctly curved; pereopod 5 basis broad, expanded not tapering, pereopod 6–7 basis broad with slight tapering (figure 11)..... V. minuta – Urosome 1 tooth straight or weakly sinuous; pereopod 5 basis narrow, not tapering (see Lincoln and Thurston, 1983: figure 3d). Pereopod 6–7 basis broad; pereopod 7 basis tapering................... V. lincolni : Published as part of Horton, Tammy, 2004, Revision of the amphipod genus Valettiopsis Holmes, 1908 (Crustacea: Lysianassoidea), with the addition of three new species, pp. 1735-1755 in Journal of Natural History 38 (14) on page 1737, DOI: 10.1080/0022293031000156259, http://zenodo.org/record/5250284 : {"references": ["LINCOLN, R. J. and THURSTON, M. H., 1983, Valettietta, a new genus of deep-sea amphipod (Gammaridea: Lysianassidae) with descriptions of two new species from the North Atlantic Ocean, Bulletin of the British Museum of Natural History (Zoology), 44, 85 - 101."]}