What could shiny blue bugs on the trunk of trees be?

Question

The shiny blue bugs are on the bases of the trees in my backyard and are all bunched together-what could they be??

Answer 1

maybe Scarab beetles?

Answer 2

blue bugs

Answer 3

this is a tongue twister.  try asking this question 5 times.

Answer 4

dont no but kill them

Answer 5

bugs that eat moss, tree lichen, or the bark of the tree.

Answer 6

Brand New. LoL

Answer 7

Might be some sort of bark beetle, but without a picture it's hard to say. If they are bark beetles, they might be harmful to the tree.