A5-A8 are transformed to A4, females lack genitalia, and there is a weak haploinsufficient transformation of A5-A8. Parasegments 10-13 are transformed to parasegment 9 in embryos.

Heterozygous males have a 7th tergite, there is loss of pigment in the anterior of the 5th tergite, and the 6th sternite has bristles. Hemizygous 'escaper' males have an 8th tergite. Tergites 5,6,7, and 8 are not fully pigmented and are covered in trichomes at a high density typical of the tergite of the 4th abdominal segment. The male genitalia and analia are normal but rotated. Hemizygous 'escaper' females lack female genitalia but have normal analia.