Wing-waving
Guides
Seioptera vibrans
Dark-tipped Wingwaver
Seioptera vibrans is a small ulidiid fly, 5–6 mm in length, recognized by its habit of constantly waving its wings while at rest. Adults are active from May to September in vegetated habitats and feed on flower pollen and small insects including aphids. Larvae develop in leaf litter where they contribute to decomposition.