Two-tailed Swallowtail Posted on 27 September, 2023 by Eric A.K.A., a Paiplio Multicaudata, seen at the Chatfield Arboretum; Littleton, Colorado. EXIF: OM System OM-1 camera, M.Zuiko 40-150mm f/2.8 lens f/5.6, 150mm, 1/1250 sec, ISO 200