A few examples of grapevine pests are displayed below. Note - some are beneficial while others are
destructive. All photos and information contained below was obtained with permission from the Michigan
State University Extension office.  To see the entire list, photos, and detailed pest information please visit the
MSUE web site at:
Hornworm (green) - see brown version below.
Assassin Bug
Lacewig - Brown
Lacewig - Green
Damsel Bug
Ground Beetle
Vineyard Pest Photos
Beneficial Insects
Adults & larvae are both predators,
eating soft-bodied small insects.
Ground Beetle - Eat insects and weed seeds.
Damsel Bug
Stout beaks & large front legs for
grasping prey.
Lacewig - Green
Lacewig - Brown
Green or brown in color - feeds on nectar,
pollen & aphid honey-dew.  Larvae are
active predators of softbodied insects.
Assassin Bug
Medium to large predatory bugs with
color range from brown to green.
Hornworm - Green
Hornworm - Brown
Grape Berry Moth
Adult Grape Rootworm
Adult Grape Root Borer
Hornworm - Green
Destructive Insects
Hornworm - Brown
Leaf pests - growing up to 5 inches.  
Make good fish food.
Grape Berry Moth
Fruit pests that winter over as pupa in leaf
Adult Grape Rootworm
Root pests - adults lay eggs on vine
trunks.  Larvae crawl to roots
remaining there for 1-2 years then eat
small roots and bore into larger ones.
Adult Grape Root Borer
Root pests lay up to 300 eggs.  Larvae
crawl to roots feeding for 2 years or
longer reducing wine vigor or killing the
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