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

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 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.

Previous events

Ptenothrix sp. - Ptenothrix

Ptenothrix sp. - Ptenothrix
Stevenson, Skamania County, Washington, USA
January 12, 2009
Found on log in yard.

Images of this individual: tag all
Ptenothrix sp. - Ptenothrix Ptenothrix sp. - Ptenothrix

Moved from Ptenothrix maculosa.

As per Frans -- see comments below.

Moved from Vesicephalus.

Ptenothrix sp.
Changed my mind. Again... ;-)
I realised it only after looking more carefully at both images... I was confused by the white 'eyecaps'...
This specimen belongs to the group of species hidden under Ptenothrix maculosa. This species is not well defined and is probably a complex of several species. Currently we have put such specimens tentatively as Ptenothrix indet5 at
So your original classification in Dicyrtomidae was correct!

Thanks for your kind permission, John.

Ptenothrix sp. 3?
Frans, I'm wondering if this is a good match for what you've more recently described as sp.3?

Indeed it is, Harsi.
Good point! More precisely it is form 1a of sp.3.
It reminds me somehow at Metallica,
so we could call it forma metallica ;-)

Moved from Dicyrtomidae.

Vesicephalus sp.
Not Dicyrtomidae but Katiannidae.
Note the large white tubercles inbetween the eye clusters.

Dear John, I would appreciate receiving your permission to use your excellent pictures of Collembola as illustrations at
Credits and copyrights will be provided for each picture used.
Thanks in advance for your cooperation.

Thanks for the IDs. Frans, feel free to use the photos for John

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