The P-element insertion line used in Fig 1a of Dai et al 2019 (FBrf0242301) was a gift from Dr. Ulrike Heberlein at Janelia Research Campus - see Corl et al., 2009 (FBrf0208186). Through inverse PCR and DNA sequencing analysis, the P{GawB} element was found to be inserted at X: 5916703 (version FB2019_02, released Apr 10, 2019).