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We visualized the projections of DmCa\textsubscript{v}3-positive neurons by using DmCa\textsubscript{v}3\textsuperscript{Gal4} to drive a membrane-tethered mCherry marker.  The strong co-localization of the mCherry signal in these flies with the GFP::DmCa\textsubscript{v}3 signal suggests both likely reflect the endogenous DmCa\textsubscript{v}3 expression pattern (Fig. \ref{fig:S2}).