Photo 140083111, (c) Ryan Grow, some rights reserved (CC BY-NC), uploaded by Ryan Grow

Attribution © Ryan Grow some rights reserved Uploaded by ryangrow Source iNaturalist Associated observations Photos / Sounds 2 photos What Yellow-margined Marsh Fly (Helophilus lapponicus) Observer ryangrow Date June 28, 2021 08:12 PM CDT Place Thunder Bay, ON, Canada (Google, OSM) Date Added June 30, 2021 09:57 PM CDT 2 IDs Research Grade View Sizes small medium large original Copyright