Polytene chromosomes normal (Kodani).
RK5 Wings are broad and short or broad and blunt at the tip.
Wings broader and shorter than wild type, blunt at the tip. Frequently shows upturned posterior scutellar bristles. Distinguished from aba by its interaction with certain svr alleles (see FBrf0006430 : table 74). RK2.
Goldschmidt.
R.B. Goldschmidt.
"aba3" was stated as tentative.