Knapweed Gall Fly

Urophora jaceana

Description

Over all length 6 to 8mm. The thorax and abdomen are grey, and it has a bright yellow scutellum and broad yellow stripe along the side of the thorax. The wings are white with four black bands across them, the outer two joining along the front edge of the wing.

Habitat

Anywhere that Black Knapweed is common. Field edges, meadows, marshland.

Status and distribution

Common and widespread throughout Britain. Common in Nottinghamshire and recorded twice at Netherfield Lagoons.

Best time to see

June to August.

  • Knapweed Gall Fly - Urophora jaceana - male - July 26th 2022

  • Knapweed Gall Fly - Urophora jaceana - male - July 26th 2022

  • Knapweed Gall Fly - Urophora jaceana - male - July 26th 2022

  • Knapweed Gall Fly - Urophora jaceana - male - July 26th 2022

  • Knapweed Gall Fly - Urophora jaceana - female - July 31st 2023

  • Knapweed Gall Fly - Urophora jaceana - female - July 31st 2023

  • Knapweed Gall Fly - Urophora jaceana - female - July 31st 2023

  • Knapweed Gall Fly - Urophora jaceana - female - July 31st 2023

  • Knapweed Gall Fly - Urophora jaceana - female - June 23rd 2024

  • Knapweed Gall Fly - Urophora jaceana - male - July 1st 2024

  • Knapweed Gall Fly - Urophora jaceana - July 1st 2024