Beneficial Insects and Pest Look-a-likes:
      How To Tell Friend from Foe

Stink bugs come in a variety of colors and shapes. To tell if a bug is a predator, look at the beak.

Predator stickbug beaks are much thincker than antennae.
Pest stickbug beaks are as thin as antennae.

Predator (Spined soldier bug)

Plant-feeder (brown stickbug)