Figure 21 from: Hou Z, Zhao S, Li S (2018) Seven new freshwater species of Gammarus from southern China (Crustacea, Amphipoda, Gammaridae). ZooKeys 749: 1-79. https://doi.org/10.3897/zookeys.749.23165

Figure 21 Gammarus jidutanxian Hou & Li, sp. n., male holotype. A head B antenna I C flagellar article of antenna I with aesthetasc D antenna II E upper lip F lower lip G left mandible H incisor and lacinia mobilis of right mandible I left maxilla I J distal part of palp article II of right maxilla I K maxilla II L maxilliped M dorsal margins of urosomites I–III.