To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Main flow features of the inner spanwise region (18% SHW) throughout multiple flapping cycles. The synergy between the forewing and hindwing LEVs are observable. Aerodynamic characteristics along the wing span of a dragonfly Pantala flavescens Csaba Hefler, Huihe Qiu, and Wei Shyy Journal of Experimental Biology 2018. 221:None-None; doi: 10.1242/jeb.171199 Download Original Video