Abstract
A new species of the genus Gammarus Fabricius, 1775 is described from Lake Tong Tso, an extreme high-altitude lake in the Qinghai-Tibetan Plateau. Gammarus pontual sp. nov. is considered part of the Gammarus lacustris G.O. Sars, 1863 group, which is characterized by having the inner ramus of uropod 3 longer than half the length of the outer ramus, and by having both rami covered with plumose setae. The new species stands apart from their congeners, mainly, by the following combination of characters: head with cephalic lateral lobe truncated; gnathopods 1-2 propodus weakly armed, with 1 stout seta defining palm; palm longer than posterior margin of propodus, with 1 main stout seta medially; pereopods 5-7 basis slender, posterior margin crenulate; epimeral plate 1 posterior margin produced into a short spine, facial ridge present; epimeral plates 2-3 posteroventral corner sharply pointed; uropod 3 rami covered with plumose setae, inner ramus about 80% the length of the outer ramus; telson apex with 2 stout setae on each side.
Highlights
MATERIAL AND METHODSGammaridae Leach, 1814, is a monophyletic family whose members are often found inhabiting springs, rivers, streams, lakes, lagoons, and marine littoral zones (Hou & Sket, 2015)
15 Gammarus species in four species groups are known from the Tibetan Plateau, of which 14 are considered endemic (Hou & Li, 2018)
We describe a new species of Gammarus of the G. lacustris species group from the Qinghai-Tibetan Plateau
Summary
MATERIAL AND METHODSGammaridae Leach, 1814, is a monophyletic family whose members are often found inhabiting springs, rivers, streams, lakes, lagoons, and marine littoral zones (Hou & Sket, 2015).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
