Thrips and several parasitoid wasps with body lengths under 2 mm, are often observed to possess bristled wings and use wing-wing interaction (clap-and-fling) during free flight. Our previous 2D clap-and-fling studies have shown that bristled wings augment lift-over-drag ratio at Reynolds number (Re) relevant to tiny insect flight (Re=10). However, previous studies using 3D wingbeat kinematics have primarily focused on examining force generation by solid (non-bristled) wings across varying Re. In this study, we aim to evaluate if the aerodynamic benefits of bristled wings are also observed when using 3D wingbeat kinematics. A dynamically scaled robotic model capable of replicating realistic 3D wingbeat kinematics during hovering was developed. We examined the flow structures generated by solid and bristled wings (single wing and wing pair) at Re ranging from 10 to 120 for real insect wing kinematics of thrips and fruit flies. Flow structures generated by the wings and their implications on forces will be discussed.