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

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

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

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

Previous events

Barklouse ID - Bertkauia crosbyana

Barklouse ID - Bertkauia crosbyana
Norfolk, Virginia, USA
December 25, 2008
Size: ~3mm (body)
Found under piece of bark in leaf litter. Ran faster than a cockroach after I took a pic.

Images of this individual: tag all
Barklouse ID - Bertkauia crosbyana Barklouse ID - Bertkauia crosbyana

you know what, guys?
I’ve just discovered, much to my astonishment, that Prof. Mockford is the author of 8 genera and 72 species listed in – a quarter of this continent’s psocopteran fauna – how about that?! – with the earliest descriptions dating back to the year 1950. (All I did was simply fishing out his e-mail address searching the web at random for someone to show a BugGuide pic to…)
Aren't we incredibly lucky to have such people helping us?

Bertkauia (Epipsocidae) -- both taxa new to the Guide
Ed Mockford det.
his comment: "This is a species of Bertkauia, probably B. crosbyana Chapman, due to the dark color."
Thank you, Prof. Mockford, for your swift reply on the New Year's Eve!

Thank you for solving the case of this peculiar little barklouse. I'll request a page. Happy New Year!

VERY cool
new family for the guide! Nice job, Scott.

Super detective work as always, v. Thanks for all your care and dedication. You're making the Guide an even better place to be! :)

Thanks Kevin!
I second the comment about v as well.

missed this one -- lovely critter!
the size and proportions suggest a mature female, rather -- i'll try to figure it out

Awesome little critter. I've got *no* idea. Thanks for adding it to the pics on the site, however!

I can't find..
anything like it in the barklouse pages.

I'm not *entirely* convinced this guy has to be a bark louse. If it is a bark louse, then it's either a kind without wings or such an early ?stage?/?molt? that it doesn't have wings yet...?? You know, it'd probably be a good idea to get Martin Hauser and Frans to take a peek at it. I know Frans has already been enjoying your other pics anyway. You two really ought to put a coffee table book together of "backyard monsters" or something like that.

I thought it might be...
an immature. It doesn't seem to have wing buds either. I wish I could have taken more images of it. The flash scared it pretty good and after a few times, it disappeared. Hopefully someone will come along and put an ID on it.

A book would be a nice project when I retire in the near future (hopefully). I haven't even put any of these images up on my website yet.

Philip Careless was the one
who put most of the Psocopteran images in order. Not sure what happened to him. We haven't seen his comments in a while. It might be good to contact him and see what he says. Besides we've added quite a few images of Psocoptera recently that need some help!

I checked his bio...
There is no e-mail address listed. Looks like he might be in Costa Rica.

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