FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
HPS4unspecified is an enhancer of eye phenotype of CskRNAi.UAS, Scer\GAL4unspecified
The mispatterning seen in CskIR.Scer\UAS, Scer\GAL4unspecified eyes is strongly enhanced when eyes are also made homozygous mutant for HPS4unspecified (using the "eyFLP/FRT" system).