Bark Lice Description:

Barklice are small, dark-colored insects that produce fine, dense webbing on the trunks of host trees. Varying in color from tan to black, these pests may or may not have wings, and are usually less than five millimeters long.


Barklice prefers the tree trunks of oaks and pecans.

Are Bark Lice Harmful?

While the webbing barklice produce may look harmful to trees, these pests are not. Instead, they feed on lichens and algae growing on tree trunks. Their self-produced webbing helps protect them from their natural enemies.

How to Get Rid of Bark Lice on Trees:

There’s no need to remove barklice and their webbing for the tree’s health reasons. However, if desired, simply brush away with a broom or spray with a garden hose set on high-pressure.

See More Articles

Pest And Disease Bagworms Banner 1440X500
Leaf or Needle Dropping


Bagworms are destructive pests of shrubs and woody ornamentals that are native to North America. Their spindle-shaped protective bags made from silk, debris and foliage provide camouflage, so they go unnoticed until there is significant plant damage.
Read More
Pest And Disease Boxwood Decline Banner 1440X500
Substance on Leaf or Oozing

Boxwood Insects & Mite Pests

There are three types of insects and mites that attack boxwoods Boxwood psyllid, Boxwood leafminer and Boxwood spider mites.
Read More

Get In Touch With Us!

We pride ourselves at Davey Tree on providing prompt, professional and personalized service from certified arborists that live, work and engage in your community. Contact one of our Davey Tree specialists for your residential needs.

Let's Find What
You're Looking For!