Help identifying beetle

[ScottinAK]

We're seeing tons of these beetles in the crowns of Birch trees in Alaska. We're also seeing Birch trees leaves browning already, I think it's from these beetles. Any help would be appreciated.

 

[JeffGu]

Ack! Stink bug!

Probably Banasa dimidiata, the Green and Red Stink Bug or one very closely related to it.

 

[ScottinAK]

Thanks man, I found out what they are, birch shield bugs. My co worker said stink bugs too but they didn't stink when smashed.