The X chromosome carrying PBac{WH}CG9132f06514 (FBti0042570) in stk#18938 is viable, but is likely homozygous female sterile. We have never formally tested the insertion chromosome for fertility but FM7C has been segregating in the stock since it was received by the BDSC in 2004 (indicating the insertion chromosome is either semi-lethal or sterile), and we had a user write in to tell us the chromosome is homozygous female sterile. Sterility may or may not be due to PBac{WH}CG9132f06514.