Abstract
A new species, Floresorchestia xueli Tong & Hou, sp. nov. is described from high altitude habitats of Yunnan, China. The species differs morphologically from its congeners by left mandible lacinia mobilis having four teeth; coxal gills complexly lobed and convoluted; epimeral plates II–III without slits; telson with one slender facial spine and two terminal spines on each lobe. Analysis of DNA barcode sequences and niche distinctiveness support recognition of the new species.
References
Azman, B.A.R., Wongkamhaeng, K. & Dumrongrojwattana, P. (2014) Description of Floresorchestia samroiyodensis, a new species of landhopper (Crustacea, Amphipoda, Talitridae) from Thailand. Zoosystematics and Evolution, 90 (1), 7–19. https://doi.org/10.3897/zse.90.7085
Bichang’a, J.S., Kioko, E.N., Liu, H., Li, S., & Hou, Z. (2021) Two species of talitridae (crustacea, amphipoda) from Kenya. Zootaxa, 4927 (3), 331–358. https://doi.org/10.11646/zootaxa.4927.3.2
Bousfield, E.L. (1984) Recent Advances in the Systematics and Biogeography of Landhoppers (Amphipoda: Talitridae) of the Indo-Pacific Region. In: Radovsky, F.J., Raven, P.H. & Sohmer, S.H. (Eds.), Biogeography of the Tropical Pacific. Association of Systematics Collections and the Bernice P. Bishop Museum as Bishop Museum Special Publication, 72, pp. 171–210.
Dang, N.T. & Le, H.A. (2011) Ho Talitridae (Amphipoda—Gammaridea) Biên Viêt Nam. Tap chí Sinh hoc, 33 (4), 1–7.
Folmer, O., Black, M., Hoeh, W., Lutz, R., Vrijenhoek, R. (1994) DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates. Molecular Marine Biology & Biotechnology, 3, 294–299.
Friend, J.A & Richardson, A. (1986) Biology of terrestrial amphipods. Annual Review of Entomology, 31 (1), 25–48. https://doi.org/10.1146/ANNUREV.EN.31.010186.000325
Holsinger, J.R. (1967) Systematics, speciation, and distribution of the subterranean amphipod genus Stygonectes (Gammaridae). Bulletin of United States National Museum, 259, 1–176. https://doi.org/10.5479/si.03629236.259.1
Hou, Z. & Li, S. (2003) Terrestrial talitrid amphipods (Crustacea: Amphipoda) from China and Vietnam: studies on the collection of IZCAS. Journal of Natural History, 37, 2441–2460. https://doi.org/10.1080/00222930210144343
Hou, Z., Fu, J. & Li, S. (2007) A molecular phylogeny of the genus Gammarus (Crustacea: Amphipoda) based on mitochondrial and nuclear gene sequences. Molecular Phylogenetics and Evolution, 45, 596–611. https://doi.org/10.1016/j.ympev.2007.06.006
Hou, Z. & Li, S. (2010) Intraspecific or interspecific variation: delimitation of species boundaries within the genus Gammarus (Crustacea, Amphipoda, Gammaridae), with description of four new species: delimitation of Gammarus species boundaries. Zoological Journal of the Linnean Society, 160, 215–253. https://doi.org/10.1111/j.1096-3642.2009.00603.x
Kumar, S., Stecher, G., Tamura K (2016) MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for bigger datasets. Molecular Phylogenetics and Evolution, 33, 1870–1874. https://doi.org/10.1093/molbev/msw054
Lefébure, T., Douady, C.J., Gouy, M. & Gibert, J. (2006) Relationship between morphological taxonomy and molecular divergence within Crustacea: Proposal of a molecular threshold to help species delimitation. Molecular Phylogenetics and Evolution, 40, 435–447. https://doi.org/10.1016/j.ympev.2006.03.014
Lowry, J.K. & Myers, A.A. (2013) A phylogeny and classification of the Senticaudata subord. nov. Crustacea: Amphipoda). Zootaxa, 3610 (1), 1–80. https://doi.org/10.11646/zootaxa.3610.1.1
Lowry, J.K. & Springthorpe, R.T. (2015) The tropical talitrid genus Floresorchestia (Crustacea, Amphipoda, Talitridae). Zootaxa, 3935, 1–68. https://doi.org/10.11646/zootaxa.3935.1.1
Miyamoto, H. & Morino, H. (2008) Taxonomic studies on the Talitridae from Taiwan, III. The genus Floresorchestia Bousfield, 1984. Crustaceana, 81, 837–860. https://doi.org/10.1163/156854008784771667
Myers, A.A. & Lowry, J.K. (2020) A phylogeny and classification of the Talitroidea (Amphipoda, Senticaudata) based on interpretation of morphological synapomorphies and homoplasies. Zootaxa, 4778 (2), 281–310. https://doi.org/10.11646/zootaxa.4778.2.3
Rafinesque, C.S. (1815) Analyse de la nature: or, Tableau de l’univers et des corps organisés. Aux dépens de l’auteur, Palerme, 224 pp. https://doi.org/10.5962/bhl.title.106607
Schellenberg, A. (1931) XVIII. Amphipoden der Sunda-Expeditionen Thienemann und Rensch. Sonder-Abdruck aus dem Archiv für Hydrobiologie, Suppl.-Bd. I. (‘Tropische Binnengewasser, Band I’), S. 493–511.
Tattersall, W.M. (1922) Zoological results of a tour in the Far East. Amphipoda with notes on an additional species of Isopoda. Memoirs of the Asiatic Society of Bengal, 6, 435–459, figs. 18–21.
Wongkamhaeng, K., Dumrongrojwattana, P. & Saengsakda Pattaratumrong, M. (2016) Two new species of Floresorchestia (Crustacea, Amphipoda, Talitridae) in Thailand. ZooKeys, 635, 31–51. https://doi.org/10.3897/zookeys.635.10454
Zheng, Y. & Hou, Z. (2017) Myanmarorchestia victoria sp. nov. (Crustacea, Amphipoda, Talitridae), a new species of landhopper from the high altitude forests in Myanmar. Zoological Research, 38, 281–290. https://doi.org/10.24272/j.issn.2095-8137.2017.067