MINNESOTA PESTICIDE APPLICATORS
CERTIFICATION CLASS C INSECT
IDENTIFICATION 100% ACCURATE
Wireworm - ANSWER Yellowish or Reddish Brown. Hard Shelled, and wire-like. Attack
Seed or drill into base of stem below ground. Kills meristematic tissue.
Seedcorn Maggots - ANSWER Problem in high organic content fields. Likely with
Manure. White legless maggot tapered toward head.
White Grubs - ANSWER C shaped, white, brown head. One inch long. Chew on roots
and root hairs.
Grape Colaspis - ANSWER Small Grubs 1/8 to 1/6 inches long. Comma shaped. Plump
white body with tan head capsule.
Black Cutworms - ANSWER Vary in color from light-gray to black. Are 1 1/2 inches fully
grown. Have somewhat greasy apperance.
Western Corn Rootworm - ANSWER Yellowish-tan. Three distinct stripes on back in
black. 1/4 inches long. Major corn pest in the United States.
Northern Corn Rootworm - ANSWER No distinct markings. Newly emerged are
cream/tan in color. turn green with age. 1/4 inches long.
Southern Corn Rootworm - ANSWER Considered minor pest in the midwest.
Corn Leaf Aphid - ANSWER Small, blue green, soft bodied insects. Infestations
originate from winged aphids carried in in June.
Assassin Bugs - ANSWER Predator Bug. Brown or black, elongated, 1/2 to 1 1/2 inch
long.
Bigeyed bugs - ANSWER Predator Bug. Small with large protruding eyes.
Damsel Bugs - ANSWER Predator Bug. Slender, elongate insects 1/4 to 3/8 inch long
that are gray-tan. Sometimes finely lined or spotted.
Green Lacewings - ANSWER Predator Bug. Delicate, light green body. 3/4 inch long.
Large, clear wings.
Ground Beetle - ANSWER Predator Bug. 3/4 to 1 1/2 inches. Dark and shiny, flattened
bodies. Long legs.
CERTIFICATION CLASS C INSECT
IDENTIFICATION 100% ACCURATE
Wireworm - ANSWER Yellowish or Reddish Brown. Hard Shelled, and wire-like. Attack
Seed or drill into base of stem below ground. Kills meristematic tissue.
Seedcorn Maggots - ANSWER Problem in high organic content fields. Likely with
Manure. White legless maggot tapered toward head.
White Grubs - ANSWER C shaped, white, brown head. One inch long. Chew on roots
and root hairs.
Grape Colaspis - ANSWER Small Grubs 1/8 to 1/6 inches long. Comma shaped. Plump
white body with tan head capsule.
Black Cutworms - ANSWER Vary in color from light-gray to black. Are 1 1/2 inches fully
grown. Have somewhat greasy apperance.
Western Corn Rootworm - ANSWER Yellowish-tan. Three distinct stripes on back in
black. 1/4 inches long. Major corn pest in the United States.
Northern Corn Rootworm - ANSWER No distinct markings. Newly emerged are
cream/tan in color. turn green with age. 1/4 inches long.
Southern Corn Rootworm - ANSWER Considered minor pest in the midwest.
Corn Leaf Aphid - ANSWER Small, blue green, soft bodied insects. Infestations
originate from winged aphids carried in in June.
Assassin Bugs - ANSWER Predator Bug. Brown or black, elongated, 1/2 to 1 1/2 inch
long.
Bigeyed bugs - ANSWER Predator Bug. Small with large protruding eyes.
Damsel Bugs - ANSWER Predator Bug. Slender, elongate insects 1/4 to 3/8 inch long
that are gray-tan. Sometimes finely lined or spotted.
Green Lacewings - ANSWER Predator Bug. Delicate, light green body. 3/4 inch long.
Large, clear wings.
Ground Beetle - ANSWER Predator Bug. 3/4 to 1 1/2 inches. Dark and shiny, flattened
bodies. Long legs.
