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

Figure 13

SEM images of maxillulae of Echinogammarus berilloni: (a) maxillulae in situ in posterior view; (b) maxillulae in anterior view; (c) inner plates of maxillulae in situ in posterior view; (d) distal setation of outer plates and palps of maxillulae in anterior view; (e) distal part of palp of left maxillula in medio-posterior view; (f) distal setation of outer plate of right maxillula in posterior view. Arrows indicate signs of abrasion.