lz^b adults have a "spectacle" eye phenotype. Ectopic cell death is seen in third larval instar eye discs.

Homozygotes have a total lack of ommatidial structure in the eye. Pigment is dispersed as a ring around the edge of the eye ("spectacle" phenotype).

Suppresses the expression of w^+mC (in a P{CaSpeR} insertion), the degree of suppression depends on the location and dosage of w^+mC.

The antennal funiculus is reduced in size in hemizygous males. All large and small basiconic sensilla on the antennal funiculus are missing, and the number of trichoid sensilla on the antennal funiculus is reduced. The number of coeloconic sensilla on the antennal funiculus is normal. The density of the coeloconic sensilla on the antennal funiculus is increased compared to wild-type.