Fig. 6

Lake fly larvae (Chironomidae) after intraoral processing. a Control specimen, and (b-c) processed larvae. The processed specimen exhibited (b) minor injuries, (c) major injuries, and (d) ruptures. Methylene blue staining highlight structural damages in the cuticle. Images e-g show details of the image sections e'-g'. Note that all samples (including the control) have a blue colored posterior area, probably due to the anal opening