Global versus local wing shape changes. General (on the left) and localized (on the right) deformations of normal wing shape (central image) which might be studied using geometric morphometrics. Each type of change is illustrated by a picture (at the bottom) and a diagram (above the corresponding image) which shows the modifications in red.
Carreira et al. BMC Developmental Biology 2011 11:32 doi:10.1186/1471-213X-11-32