Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Registration is open for the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29


Previous events
TaxonomyBrowseInfoImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Unidentified Tracks, Sign, and Other Mysteries » Unidentified Galls » Salix (willow) stem galls
Photo#369308
Willow gall
Copyright © 2010 Joe Zito

Willow gall
Cedar Rapids/ICNC, Linn County, Iowa, USA
January 27, 2010
Size: 2 to 5 mm across
We noticed these only after all leaves had dropped, so we are not 100 percent sure on species of willow, but suspect they were "sandbar willows" - Salix exigua. Will save them to see what emerges, but wondered if anyone knows what they might be. They were present at a rate of only one or two on every 10 or 15 trees. They were not on the ends of the twigs, but about halfway up each.
tag · login or register to post comments
Contributed by Joe Zito on 3 February, 2010 - 6:49pm
Last updated 21 October, 2011 - 9:17am

Moved
Moved from Unidentified Galls.
… Charley Eiseman, 21 October, 2011 - 9:17am login or register to post comments

Moved
Moved from ID Request.
… Charley Eiseman, 6 February, 2010 - 6:26pm login or register to post comments

I think there are two options:
Gall midges or Euura spp. sawflies. If nothing comes out of the galls, it should be possible to distinguish between these two groups by cutting them open. If the insects do emerge, it will probably require expert examination of the specimens to determine which species.
… Charley Eiseman, 3 February, 2010 - 7:57pm login or register to post comments

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.

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

Printer Friendly Version 		Terms of Use
Privacy Statement
Site Map
Contact