Alfalfa weevil Aphid Armyworm larva Assassin bug Bean leaf beetle Blister beetle

Insect Identification

Chinch bug Corn earworm larva Corn rootworm larva Cricket Cutworm larva European corn borer larva Flea beetle Grain weevil Grasshopper Green lacewing

Honeybee Japanese beetle Lady beetle larva Leaf skeletonizer Leafhopper Mexican bean beetle Scale Spider mite

Spittlebug Spotted cucumber beetle/ Southern corn rootworm beetle Stink bug Tobacco/tomato hornworm larva Western corn rootworm beetle White grub QUIT Wireworm

Alfalfa weevil
Life cycle complete metamorphosis

Key ID features larva larva adult 3/8 inch long black head yellowish green body white stripe on back 1/4 inch long brown body dark stripe on back snout beetle

adult

Economic impact destruction of vegetative parts (leaves)

Aphid
Life cycle incomplete metamorphosis

corn leaf aphid

Key ID features 1/16 to 1/8 inch long can be green, black, brown, red, pink, or some other color soft-bodied piercing-sucking mouthparts small tubes (cornicles) near the rear of the abdomen Economic impact destruction by removal of plant fluids

greenbug

Armyworm larva
Life cycle complete metamorphosis Key ID features about 1 1/2 inches long two orange stripes along each side two dark stripes on back head is yellow-brown with pattern of dark lines Economic impact destruction of vegetative parts (leaves)

Assassin bug
Life cycle incomplete metamorphosis

Key ID features up to 1 1/4 inches long usually brownish black front legs are enlarged to hold prey piercing-sucking beak is used to drain body fluids from prey Economic impact no damagepredatory on other insects

assassin bug adult

assassin bug nymph

Bean leaf beetle

Life cycle complete metamorphosis Key ID features 1/4 inch long green, yellow, tan, or red black triangle behind the head on wing covers black band around the outer edge of wing covers often have two black spots on each wing cover Economic impact destruction of vegetative parts (roots) by larvae destruction of vegetative parts (leaves) by adults

Blister beetle
Life cycle complete metamorphosis Key ID features 1/2 to 1 inch long colors range from black to grey to brown some species have orange stripes soft body with distinct neck-like appearance the prothorax is narrower than the wings Economic impact destruction of fruit/flower

Chinch bug
Life cycle incomplete metamorphosis Key ID features 3/16 inch long each front wing has a triangular black area near the middle of the outer edge sucking mouthparts gives off foul odor when crushed Economic impact destruction of vegetative parts (leaves)

Corn earworm larva

Life cycle complete metamorphosis Key ID features up to 1 1/2 inches long color varies from green to pink to brown to black alternating light and dark stripes run the length of the body easily confused with armyworm and fall armyworm Economic impact destruction of fruit/flower

Corn rootworm larva

Life cycle
Marlin E. Rice

complete metamorphosis Key ID features about 1/2 inch long white body with brown head dark plate on top side of terminal segment Economic impact destruction of vegetative parts (roots)

Cricket
Life cycle incomplete metamorphosis Key ID features up to 3/4 inch long closely related to grasshoppers usually darker in color than grasshoppers active at night feeds on dead insects and dead plant materials Economic impact none

Cutworm larva
Life cycle complete metamorphosis Key ID features up to 1 1/2 inches long light grayish brown to almost black shiny appearance Economic impact destruction of vegetative parts (leaves) black cutworm

European corn borer larva

Life cycle complete metamorphosis Key ID features 3/4 to 1 inch long flesh-colored body blackish head two distinct light brown spots on top of each abdominal segment Economic impact destruction of vegetative parts destruction of fruit/flower

Flea beetle
Life cycle complete metamorphosis Key ID features 1/16 inch long black enlarged hind legs known for its ability to jump long distances Economic impact destruction of vegetative parts (leaves)

corn flea beetle

Grain weevil
Life cycle complete metamorphosis Key ID features 1/8 to 3/16 inch long reddish brown to black head is prolonged with distinct snout cosmopolitan pest of stored grain Economic impact destruction of fruit/flower (larvae feed on stored grain)

Grasshopper
Life cycle incomplete metamorphosis Key ID features 1 to 1 1/2 inches long brown or greenish gray very large hind legs prominent eyes and antennae Economic impact destruction of vegetative parts (leaves)

Green lacewing
Life cycle
Marlin E. Rice

complete metamorphosis Key ID features up to 3/4 inch long green or brown large, lacy wings holds wings over back when not in flight Economic impact no damagelarvae are predatory on aphids and other soft-bodied insects, insect eggs, mites, and spiders

Honeybee
Life cycle complete metamorphosis Key ID features worker bees are 2/5 to 3/5 inch long two pairs of clear wings hairy body, usually golden brown and black Economic impact no damagehoneybees are important pollinators

Japanese beetle
Life cycle complete metamorphosis Key ID features about 1/2 inch long copper brown wing covers metallic green head, thorax, and legs white-striped underside Economic impact destruction of vegetative parts (leaves of soybeans) destruction of fruit/flower (silks of corn)

Lady beetle larva

Life cycle complete metamorphosis Key ID features 1/25 to 3/8 inch long there are many species of lady beetle larvae are dark in color and alligator-like often gray or black with yellow or orange bands or spots larvae have three pairs of prominent legs Economic impact no damagepreys on aphids and also feeds on other soft-bodied insects and insect eggs

Leaf skeletonizer
Life cycle
Bob Hammon

complete metamorphosis Key ID features 1/2 inch long when mature yellowish with black and purple bands larvae eat grape leaf tissue, leaving only veins adult is a black moth Economic impact destruction of vegetative parts (leaves)

western grapeleaf skeletonizer

Leafhopper
Life cycle incomplete metamorphosis Key ID features potato leafhopper 1/8 inch long color is usually yellow to green to greenish blue wedge-shaped with large eyes at side of head piercing-sucking mouthparts long hind legs for jumping there are more than 20,000 species of leafhoppers worldwide Economic impact destruction by removal of plant fluids

Mexican bean beetle

Life cycle complete metamorphosis Key ID features about 1/4 inch long round and orange-brown 16 black spots on wing covers Economic impact destruction of vegetative parts (leaves)

Scale
Life cycle incomplete metamorphosis Key ID features up to 1/4 inch long there are many kinds of scale insects some are covered by a waxy shell some are covered by cottony fibers found on plant leaves and stems Economic impact destruction by removal of plant fluids euonymus scale

euonymus scale

Spider mite
Life cycle incomplete metamorphosis Key ID features twospotted spider mite less than 1/60 inch long spider mites are not insects 4 pairs of legs do not have antennae some spider mites produce webbing on foliage Economic impact destruction by removal of plant fluids

pittlebug
Life cycle incomplete metamorphosis Key ID features 1/4 to 3/8 inch long wedge-shaped wing covers with darker spots or bands nymphs are the damaging stage nymphs live in frothy spittle-like secretions Economic impact meadow spittlebug adult destruction by removal of plant fluids

meadow spittlebug nymph

potted cucumber beetle/Southern corn rootworm beetle

Life cycle complete metamorphosis Key ID features 3/8 inch long yellow to light green in color 11 spots on wing covers Economic impact destruction of vegetative parts (leaves) destruction of fruit/flower (adults may clip silks of corn)

tink bug
Life cycle incomplete metamorphosis Key ID features 1/2 inch long green and brown stink bugs are common have piercing-sucking mouthparts shield-shaped body there are several species of stink bugs Economic impact destruction by removal of plant fluids green stink bug

brown stink bug

obacco/tomato hornworm larva

Life cycle complete metamorphosis Key ID features up to 3 to 4 inches long green to blue-black single horn on the tail end of the body has 7 or 8 whitish or yellowish V-shaped marks on body Economic impact destruction of vegetative parts (leaves)

Western corn rootworm beetle

Life cycle complete metamorphosis Key ID features 1/4 inch long yellow with 3 black stripes on the wings larvae are white and slender Economic impact destruction of fruit/flower (adults feed on pollen and clip corn silks) destruction of vegetative parts (by larvae on roots)

White grub
Life cycle complete metamorphosis

Key ID features up to 1 inch in length larvae are C-shaped various beetles have larvae called white grubs bodies are creamy white with brown head capsules Economic impact destruction of vegetative parts (roots)

Wireworm
Life cycle complete metamorphosis Key ID features up to 1 inch in length shiny and slender pale yellow in color when small reddish brown when larger Economic impact destruction of vegetative parts (seedling corn) destruction of germinating corn seeds

lfalfa weevil

lfalfa weevil

phid

phid

rmyworm larva

ssassin bug

ssassin bug

ean leaf beetle

lister beetle

hinch bug

orn earworm larva

orn rootworm larva

ricket

utworm larva

uropean corn borer larva

ea beetle

rain weevil

rasshopper

reen lacewing

oneybee

apanese beetle

ady beetle larva

eaf skeletonizer

eafhopper

exican bean beetle

cale

cale

pider mite

pittlebug

pittlebug

potted cucumber beetle/Southern corn rootworm beetle

tink bug

tink bug

obacco/tomato hornworm larva

Western corn rootworm beetle

White grub

Wireworm

The End