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) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Longhorn and Leaf Beetles (Chrysomeloidea) » Leaf Beetles (Chrysomelidae) » Eumolpinae » Eumolpini » Chrysochus » Blue Milkweed Beetle (Chrysochus cobaltinus)
Photo#204325
Chrysochus cobaltinus - Cobalt Milkweed Beetle 01 - Chrysochus cobaltinus
Copyright © 2008 M. N. O'Donnell

Chrysochus cobaltinus - Cobalt Milkweed Beetle 01 - Chrysochus cobaltinus
Davis; Putah Creek; Stevenson Bridge, Yolo County, California, USA
July 20, 2008
Size: ~1cm
more green than "usual" for this species.
tag · login or register to post comments
Contributed by M. N. O'Donnell on 21 July, 2008 - 2:39pm
Last updated 22 July, 2008 - 9:42am

Moved
Moved from Leaf Beetles.
… john and jane balaban, 22 July, 2008 - 9:42am login or register to post comments

Rocky Mountain populations al
Rocky Mountain populations along the front range are always green but are classified as Chrysochus cobaltinus. Go figure.
… John Randall Watts, 22 July, 2008 - 7:42am login or register to post comments

 
Diet question
John, I found a few of these apparently feeding on Monardella and dogbane flowers yesterday, at about 6600' elevation in the Sierra Nevada. One is a deep metallic blue, and the other is quite purple. Given that one was on dogbane, I naturally wondered if auratus might be a possibility. Any thoughts? Would photos of the specimens help? Milkweed is pretty scarce for miles from where these were. Thanks!
… Will Richardson, 15 July, 2013 - 7:13pm 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