Mouthpart Morphology of Three Sympatric Native and Nonnative Gammaridean Species: Gammarus pulex, G. fossarum, and Echinogammarus berilloni (Crustacea: Amphipoda)

Figure 4

SEM images of distal part of gnathopods: (a) right first gnathopod of G. pulex in anterior view; (b) left second gnathopod of G. pulex in posterior view; (c) left second gnathopod of G. pulex in anterior view; (d) right first gnathopod of G. fossarum in anterior view; (e) left second gnathopod of G. fossarum in posterior view; (f) left second gnathopod of G. fossarum in anterior view; (g) right first gnathopod of E. berilloni in anterior view; (h) left second gnathopod of E. berilloni in posterior view; (i) left second gnathopod of E. berilloni in anterior view. Abbreviations other than in previous figures: c: carpus; d: dactylus; p: propodus.