Two new species of Sarothrogammarus (Crustacea, Amphipoda) from Swat Valley, Pakistan Author Xin, Wenpei 0009-0002-1307-7771 School of Life Sciences, Hebei University, Baoding 071002, China & Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Author Zhang, Chao 0000-0003-1702-1206 School of Life Sciences, Hebei University, Baoding 071002, China zhangchao@hbu.edu.cn Author Ali, Abid 0000-0003-3674-7811 College of Life Science, Shenyang Normal University, Shenyang 110034, Liaoning, China & Department of Entomology, Faculty of Agriculture, University of Agriculture, Faisalabad- 38040, Punjab, Pakistan abid_ento74@yahoo.com Author Zhang, Xiaoqing 0000-0003-0687-9266 College of Life Science, Shenyang Normal University, Shenyang 110034, Liaoning, China zhangxiaoqing@ioz.ac.cn Author Li, Shuqiang 0000-0002-3290-5416 Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China lisq@ioz.ac.cn Author Hou, Zhonge 0000-0001-5929-1154 Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China houze@ioz.ac.cn text Zootaxa 2024 2024-04-03 5432 4 509 534 http://dx.doi.org/10.11646/zootaxa.5432.4.3 journal article 10.11646/zootaxa.5432.4.3 1175-5326 10910611 4EB40A6D-8080-4E3F-9F0C-D055ED8C2C8A Key to the species of Sarothrogammarus -group from the Pamir region 1. Pereopod IV with filtrative setae................................................ Comatogammarus ferghanensis - Pereopod IV with no filtrative setae...................................................................... 2 2. Second article of outer ramus in uropod III vestigial.......................................................... 3 - Second article of outer ramus in uropod III distinct........................................................... 4 3. Outer ramus of uropod III slender........................................................ Barnardiorum ruffoi - Outer ramus of uropod III extended..................................................... Barnardiorum shadini 4. Eyes absent..................................................................... Sarothrogammarus yiiruae - Eyes present......................................................................................... 5 5. Antenna I peduncle with long setae on ventral margin.................................. Sarothrogammarus trichiatus - Antenna I peduncle with short setae on ventral margin........................................................ 6 6. Antenna I accessory flagellum with two segments........................................................... 7 - Antenna I accessory flagellum with three or four segments.................................................... 8 7. Gnathopod II palm very oblique.................................................. Sarothrogammarus afghanus - Gnathopod II palm not oblique.................................................... Sarothrogammarus asiaticus 8. Pereopod III with filtrative setae......................................................................... 9 - Pereopod III with no filtrative setae...................................................................... 10 9. Male pereopod III with filtrative setae on merus, carpus and propodus.......... Sarothrogammarus miandamensis sp. nov. - Male pereopod III with filtrative setae on merus, but few on carpus and propodus... Sarothrogammarus kalamensis sp. nov. 10. Both male and female pereopod III with rows of long setae.......................... Sarothrogammarus multipennatus - Female pereopod III without long setae............................................ Sarothrogammarus lindbergi