Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Gnats, Gall Midges, and March Flies (Bibionomorpha) » Fungus Gnats and Gall Midges (Sciaroidea) » Gall Midges and Wood Midges (Cecidomyiidae) » Gall Midges (Cecidomyiinae) » Cecidomyiidi » Asphondyliini » Bud gall midges (Asphondylia) » Prairie Coneflower Gall Midge (Asphondylia ratibidae)
Photo#555963
flower gall on Yellow Coneflower - Asphondylia ratibidae
Copyright © 2011 John Pearson

flower gall on Yellow Coneflower - Asphondylia ratibidae
Sand Hill Prairie, Chichaqua Bottoms Greenbelt, Polk County, Iowa, USA
July 29, 2011
Size: ~4 mm tall
A few flowerheads of the very abundant Yellow Coneflowers (Ratibida pinnata) in this prairie were distorted by unusual growths of some disc flowers. Are these galls?

gathering_2011

Images of this individual: tag all
flower gall on Yellow Coneflower - Asphondylia ratibidae flower gall on Yellow Coneflower - Asphondylia ratibidae flower gall on Yellow Coneflower - Asphondylia ratibidae flower gall on Yellow Coneflower - Asphondylia ratibidae
Contributed by John Pearson on 1 August, 2011 - 8:35pm

Moved
Moved from ID Request.
According to Gagne (1) this gall is only known from Texas, on R. columnifera, but it must be the same species. It is evidently the only gall recorded from Ratibida.
… Charley Eiseman, 1 August, 2011 - 8:55pm

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo