Photo 87818897, (c) Nathaniel Sharp, some rights reserved (CC BY-NC), uploaded by Nathaniel Sharp

Attribution © Nathaniel Sharp some rights reserved Uploaded by nsharp Source iNaturalist Associated observations Photos / Sounds 3 photos What Four-barred Knapweed Gall Fly (Urophora quadrifasciata) Observer nsharp Date August 1, 2020 12:16 PM EDT Place Hatchville, MA 02536, USA (Google, OSM) Date Added August 2, 2020 11:32 AM EDT 2 IDs Research Grade View Sizes small medium large original