The following information accompanied stocks donated to the Bloomington Drosophila Stock Center by Paul Taghert, Washington University Medical School. P{UAS-Pdf.t.ML}F1a and {UAS-Pdf.t.ML}F5a are both homozygous viable and fertile insertions on the third chromosome. P{UAS-Pdf.t.SCR}B4 is a homozygous viable insertion on the second chromosome. P{UAS-Pdf.t.SCR}B5 is a homozygous viable insertion on the third chromosome.