Optogenetic activation (using Cnoc\ChR1::Csub\ChRCsChrimson.IVS.20xUAS.Venus with 617 nm (red) light) of Scer\GAL4Gr63a.PD cells in adult females in an area of an arena significantly increases avoidance of that area, compared to controls; there is no effect on angular speed or walking speed, compared to baseline, similar to controls.