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 » Tenebrionoidea » Wedge-shaped Beetles (Ripiphoridae) » Ripiphorinae » Macrosiagon » Macrosiagon cruenta
Photo#819822
Wedge-shaped - Macrosiagon cruenta
Copyright © 2013 Gacko

Wedge-shaped - Macrosiagon cruenta
Desoto, Dallas County, Texas, USA
August 3, 2013
Size: 8.5mm head to wingtip
Macrosiagon cruenta? I found it on a mint-stalk, partially hidden by a leaf. It might have been caught in a spider web as there was some webbing on the elytra when I looked at the pictures.

Images of this individual: tag all
Wedge-shaped - Macrosiagon cruenta Wedge-shaped - Macrosiagon cruenta
tag · login or register to post comments
Contributed by Gacko on 7 August, 2013 - 11:30pm
Last updated 14 December, 2013 - 3:29pm

Yes, definitely right!
Rivnay(1), Linsley & MacSwain(2), and Vaurie(3) all indicate that M. cruentum is the only species in the genus with 2nd hind tarsomere longer than third. (See, for instance, Rivnay's discussion here.)

The 2nd hind tarsomere in your image above is clearly longer than the third, which clinches the ID.
… Aaron Schusteff, 14 December, 2013 - 3:45pm login or register to post comments

Moved
Moved from Wedge-shaped Beetles.
… Aaron Schusteff, 14 December, 2013 - 3:29pm 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