Figure 7b. Relative warps of a thin plate spline comparison of average landmarks of 53 male and 61 female wings of U. Tenn. Ag. wild type Drosophila melanogaster. The major difference between the male and female wings is seen to be a small dilation of the distal two-thirds of the wing blade in the male compared to the female plus a slight flecture of the male extremities posteriorly relative to the female.