Currently viewing the category: "Booklice and Barklice"
What's That Bug? does not endorse extermination

Subject: Barklice?
Location: Greenville, SC
September 13, 2015 3:47 pm
Hello,
I recently discovered a large grouping of insects on one of my trees. The insects are very small and are grouped very tightly together. I would estimate that there are 300-400 insects in this group that I sent a picture of. Apon further investigation I noticed this one grouping was just the tip of the iceberg. From standing at the bottom of the tree I can see about 20-25 additional grouping. In other words the tree is infested with these insects. I am affraid they are killing the tree. I searched the Internet and found a Barklice that look very similar to the insect on my tree. Can you please tell me if this is a Barklice and what I should do to remove it? Thank you very much. I greatly appriciate your help.
Signature: Jason Buckley

Barklice

Barklice

Dear Jason,
These are indeed Barklice or Tree Cattle, and they are benign insects that feed on lichens.  They will not harm your tree, however, their presence because of large amounts of lichen and fungus on the tree may signal that the tree is compromised, though not because of the Barklice.  Your individuals look like
Cerastipsocus trifasciatus based on images posted to BugGuide.

Daniel,
Thank you very much. I will leave the these insects alone and have someone inspect the health of our tree asap. We greatly appreciate your help.
Thank you,
Jason Buckley

What's That Bug? does not endorse extermination

Subject: Insects in the balcony
Location: Berlin
July 28, 2015 11:27 am
Hi,
we have started having these insects since middle of May.
We live in the city, in a 5 story building, on the 3rd floor.
They are around 1 mm long and don’t bite.
We could see them in the balcony, crawling on the tiles specially in the evening, when the sun starts setting down and in the early night.
We have started seeing them too in the bedroom, only close to the window.
Any idea what they are?
Signature: Javier

Cave Barklouse

Cave Barklouse

Dear Javier,
We believe we have correctly identified your Cave Barklouse in the family Psyllipsocidae as
Dorypteryx domestica thanks to images posted to BugGuide where it states they are found in “household habitats, food storage facilities.”

What's That Bug? does not endorse extermination

Subject: What are these
Location: 01267
July 24, 2015 3:57 pm
These bugs where at the base of a old blue spruce tree in Williamson ma 01267.
zoom in to see the bee like markings.
Thank you
Signature: Jesse Wirtes

Tree Cattle

Tree Cattle

Dear Jesse,
This is probably the most amazing aggregation of immature Barklice or Tree Cattle we have ever seen.  Barklice are benign creatures that feed on lichens and fungus on tree bark.  Though they do not harm the tree, they might be symptomatic of an ailing tree.  Adult Barklice have wings.

Tree Cattle

Tree Cattle

Daniel,
Thank you!
The photo was just a small part of the mass that was around and on the tree.
Jesse

What's That Bug? does not endorse extermination

Subject: Swarms of Bugs on my Fence in Kentucky.
Location: Louisville, Kentucky
June 25, 2015 9:44 am
All,
I woke up this morning and saw several swarms of the attached bugs on my fence in Louisville, KY. Any ideas what this is?
Signature: Rick L

Barklice

Barklice

Dear Rick,
These benign Barklice or Tree Cattle are generally found feeding on lichens and fungus on trees, and because of their numbers, they alarm gardeners.  They are perfectly harmless.  Finding them on a fence is unusual, but if you used untreated wood, fungus and lichen might be growing on the fence.

What's That Bug? does not endorse extermination

Subject: Question from my 5-year old son
Location: Florida
June 3, 2015 12:42 pm
Dear Bugman,
We saw these bugs on a tree. It was in our yard. What are they? We live Florida. Winter park. We saw them yesterday.
(Mom who typed this adds: They were swarming in several locations on that tree. They were all about the size of a kid’s fingernail. No flying just grouping together. Hadn’t seen them there before. My son really loves bugs and our goal this summer, being fairly new to florida, is to find and identify as many as we can. We couldn’t find these in a guidebook. Pic attached! THank you I advance!)
Signature: From Declan

Tree Cattle

Tree Cattle

Dear Declan,
These immature Barklice,
Cerastipsocus venosus, are commonly called Tree Cattle, and though they may look like an injurious species, they are actually quite benign, feeding on lichens that grow on the trees and not in any way harming the trees themselves.  Adult Tree Cattle have wings.  You can read more about Tree Cattle on BugGuide.

What's That Bug? does not endorse extermination

Subject: Fly?…
Location: Houston
April 30, 2015 10:58 am
Hello bugman,
I noticed a large cluster of flying bugs of some sort on my tree today. 2 groups. From a distance they appear black, like large gnats? Up close they’ve got 6 legs it appears, long antennae, and wings. The wings are a very detailed combination of black and gray colors, outlined in white with a white solitary spot. Very beautiful looking up close. Just not sure if these are invasive /destructive to my tree/garden and wanted to check what they were. The closest thing I’ve been able to find is a picture winged fly but there are so many I wasn’t sure. I have a video as well if you’d like it. You’re help is truly appreciated!
Signature: Alma

Barklice

Barklice

Dear Alma,
These benign Barklice,
Cerastipsocus venosus, might appear alarming when they are seen clustering on a prized tree in the yard, but gardeners have no cause for alarm.  Barklice feed on lichens, and they will not harm your tree.  Barklice are sometimes called Tree Cattle.  Your image is of winged adults.  Wingless Barklice nymphs are boldly striped.  We just realized it is the first of May and we need to select a new Bug of the Month, so we have selected your excellent image of Tree Cattle as the featured posting of the month.

You guys are AWESOME! I can’t thank you enough for your help and information!!!  I’m a huge science fan so I love exploring and trying to figure out what things are. I also know how busy you guys must get, so I will definitely be helping with a donation. I also let people know about your site when they are trying to figure out bugs. If you ever need help for rebranding/redesigning let me know (I’m a professional graphic designer). I’m happy to help if you need it!
You have a great weekend!
Alma Soto

Thanks for the offer Alma.  We got our start many years ago on the now defunct American Homebody site, and we still prefer our homey look to the more high tech sites.

I can most certainly understand and respect that!
For what you guys do… It actually works.
Again thank you guys so much for your help, and prompt response. i’ve made sure to tell all my friends about you guys, and have already tweeted you out. 🙂 you guys have helped me before I remembered for a bug I experienced when we lived on job assignment on Venezuelan Penninsula that they call pachaco – it was I found out thanks do you guys a Solifugae (all I could remember was that their body looked like a cross between an ant, spider and an earwigi- they were fierce looking, fast, and scared the living daylights out of me). so again, thank you guys for all you do!
Alma

What's That Bug? does not endorse extermination