Fig. S8.

Definition of morphometric parameters. White dashed lines mark the boundaries of the waist region. The blue arrow defines the waist length as the distance between the respective midpoints of the white dashed lines. The yellow arrow defines the waist width as the distance across the middle of the waist, which is also the thinnest part of the waist region. The red arrow defines the head length as the distance between the tip of the head and the midpoint of the head/waist boundary. The cyan arrow defines the head width as the distance across the middle of the head piece. (Scale bar: 2 mm.)