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

Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

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

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

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Terrarium Moss Garden Beetles - Simplocaria semistriata

Terrarium Moss Garden Beetles - Simplocaria semistriata
Dover, New Hampshire, USA
Size: 3mm
It has been just over two weeks since I posted the ID request for these cute little guys:

The larvae have since disappeared from my terrariums and now I am seeing several of these little beetles. Up close, their shells are shiny with a hint of white or yellowish hairs near the back of the shell. They react quickly to play dead, and remain in a closed state for a few minutes before getting the courage to open up. Is this an adult leaf beetle? I didn't expect it to stay so small! Do I need to worry about having these in my terrariums, will they pose any infestation problem?

Thanks for your time and advice!

Moved tentatively; looks like the adventive S. semistriata
next time please make sure to crop images tight like i did here for you and crop off the ruler before posting

Moved from ID Request.

Featherwing Beetle?
Am I in the right neighborhood? Thanks! :)

not related; this is a Simplocaria
not a slightest concern

Simpolcaria semistriata
This insect is known to feed, mate, and oviposit on mats of the moss Dicranella heteromalla in North America. It is an invasive species from Europe where it feeds on Mnium hornum. It is selective in its food, avoiding the moss Atrichum angustatum when it is intermixed with the Dicranella. See Johnson 1990.

Johnson, P. J. 1990. Notes on the naturalization of two species of European Byrrhidae (Coleoptera) in North America. J. N. Y. Entomol. Soc. 98: 434-440.

Thanks! I'll be sure to pull
Thanks! I'll be sure to pull in a closer crop next time! Do you think these are the adults of the larval stage I posted a few weeks ago?

the two don't look related to me at all

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