In mutant embryos the stigmatophore does not form, resulting in a non-protruding but otherwise normal spiracular chamber, with the trachea connected as normal to the spiracle.
Heterozygotes with salmA405.1M2 display a weak salm phenotype.
salm2 has lethal | embryonic stage phenotype, suppressible by salaC20-sal
Embryonic lethality and the homeotic effects can be rescued by the salaC20-sal construct, individuals die as crawling larvae.
salmA405.1M2/salm2 is rescued by salmC20-sal26
salm2 is rescued by salmC20-sal26
salmC20-sal26 rescues the salmA405.1M2/salm2 mutant phenotype. salmC20-sal26 also rescues the homozygous head mutant phenotype and partially rescues the tail defects.