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) » Longhorn Beetles (Cerambycidae) » Flat-faced Longhorn Beetles (Lamiinae) » Tetraopini » Milkweed Longhorn Beetles (Tetraopes) » Red Milkweed Beetle (Tetraopes tetrophthalmus)
Photo#291690
milkweed beetle? - Tetraopes tetrophthalmus
Copyright © 2009 Molly Jacobson

milkweed beetle? - Tetraopes tetrophthalmus
Merrimack, Hillsborough County, New Hampshire, USA
June 20, 2009
Size: ~1/2 in.
Ok... I know these guys so well, but now I'm confused. I always thought they were the Red Milkweed Beetle, Tetraopes tetraophthalmus, but then I saw a picture of the Milkweed Longhorn, Tetraopes femoratus, which looks very similar. Now I'm not sure which one I have! I think it is the red milkweed beetle, because the longhorn has red on the first antenna segment, and these have black.
tag · login or register to post comments
Contributed by Molly Jacobson on 21 June, 2009 - 2:54pm
Last updated 27 March, 2011 - 1:55am

Moved
I agree with the ID.
… Beatriz Moisset, 6 July, 2009 - 8:31pm login or register to post comments

spots, Tetraopes tetrophthalmus + antennae diff
I think another thing to look at is the spots on their backs. One has more oval, elongated ones than the other. To me yours look like Tetraopes tetrophthalmus, unless there's another one with elongated spots. Also I think femoratus has antennae with alternating light and dark.
… Andrew Williams, 21 June, 2009 - 4:03pm 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