Puparium formation is delayed about 13 hours at 25oC.
Homozygotes die during the first larval instar stage. Viability, fertility, and classification of heterozygotes is excellent. There is a slight delay in the time of the second larval moult. Shows a medium Minute phenotype. The Minute phenotype of M(2)58F2 is suppressed by SM5, as if this Minute lies within the 58B-F segment duplicated in SM5 (Kennison: M located between Pu2 and PinB).