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) » Adephaga » Ground Beetles (Carabidae) » Trechinae » Bembidiini » Bembidiina » Bembidion » Subgenus Bembidion (Bembidion Subgenus Bembidion) » Bembidion quadrimaculatum » Bembidion quadrimaculatum dubitans
Photo#1249776
Tiny Ground Beetle - Bembidion quadrimaculatum
Copyright © 2016 Jim Moore

Tiny Ground Beetle - Bembidion quadrimaculatum
In Westwood - elevation 5100ft, Lassen County, California, USA
April 20, 2016
Size: Body length 3mm
Found deceased in a bucket of water.
My thanks for any further ID help for this little beetle.

GrBet 120 - Sent to Peter W. Messer

Images of this individual: tag all
Tiny Ground Beetle - Bembidion quadrimaculatum Tiny Ground Beetle - Bembidion quadrimaculatum
tag · login or register to post comments
Contributed by Jim Moore on 2 July, 2016 - 1:47am
Last updated 9 February, 2019 - 1:46pm

Bembidon quadrimaculatum dubitans (LeC.) - the dark "cruralis"
morph (LeConte) is my ext phys det for this ex @ PWMC. This dark morph is distinguished by the absence of light colored maculae atop elytra. It may someday become a valid subspecies. Please see the "cruralis" holotype at mczbase.mcz.harvard.edu/guid/MCZ:Ent:5549
… Peter W. Messer, 9 February, 2019 - 1:46pm login or register to post comments

Moved
Moved from Ground Beetles.
… v belov, 2 July, 2016 - 2:26am 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