Contents: By Damage and Image
In progress
Contents: Alphabetical

alder flea beetle
aphid management
apple and thorn skeletonizer
apple ermine moth
ash whitefly
azalea bark scale
azalea lace bug
azalea sawfly
Bagrada bug
bark lice
Barypeithes root weevil
Beneficial nematodes
biocontrol of root weevils
birch aphid
black bean aphid
black cherry aphids
black stem borer
bluegum psyllid
Boisduval scale
branch and twig borer
brown marmorated stink bug

bronze birch borer
boxwood leafminer
boxwood psyllid
bulb flies
cabbage whitefly
carnation tortrix
carpet beetle (images)
Calligraph californica

Ceanothus stem gall moth
cereal leaf beetle
cherry ermine moth
chilli thrips
cinnabar moth
clay colored weevil
cottony camellia scale

crane flies
cypress tip moth

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
elm leafminer
European pine sawfly new
European pine shoot moth
European wool carder bee
emerald ash borer
Fall webworm
fir coneworm new
flatheaded cedar borer
ground beetle gallery
Hemerocallis gall midge new
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
Japanese beetle
lady beetle gallery
leaf weevil
light brown apple moth
Linden aphid new
lupine aphid new
Macrosiphum rhamni new
maple aphids
maple tip moth
maple midge
March flies
mountain ash sawfly
Myzocallis sp. on red oak new
Narcissus bulb fly
natural enemies gallery
oak ambrosia beetle
oak slug
oak twig gall wasp
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear blight beetle
pear psylla
pear leaf-curling midge
pear sawfly
pine needle scale
pine and cone spittlebug
poplar and willow borer
Psyllopsis fraxinicola
rose curculio weevil
rose midge
rove beetle gallery
rose stem girdler
sequoia pitch moth
soldier beetle gallery
snapdragon plume moth new
snakefly gallery
speckled green fruitworm
meadow spittlebug
spotted asparagus beetle
spruce twig aphid
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
woolly alder aphid new
woolly ash aphid
woolly beech aphid

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Friends with Benefits - Natural Enemies Gallery (work in progress)

All of these years working with biological pest management have made me appreciate the diversity of natural enemies helping us by suppressing pests in the field. Learn to recognize these beneficials and you will feel surrounded by friends.

This is a work in progress. More beneficials will be added as time permits.


Neuroptera - Lacewings, snakeflies, duskywings


The green lacewing adults are frequently found near porch lights at night but their alligator-like larvae are found searching for prey on leaves. Many species lay their eggs on stalks.

green lacewing adult
green lacewing adult

stalked green lacewing egg
stalked green lacewing egg

lacewing larva
green lacewing larva

It is called a fly but a snakefly actually belongs to the same family as green lacewings, Neuroptera.

snakefly adult

Dustywings - Coniopterygidae

Small, barely noticeable, these tiny relatives of lacewings eat tiny prey such as spider mites and insect eggs.

dustywing adult
dustywing adult

dustywing larva
dustywing larva


Coleoptera - Beetles

Ground beetle - Carabidae

Small to large beetles, often with grooved hindwings (elytra)

ground beetle
ground beetle

Rove beetles - Staphylinidae

Often recognized by their short hind wings (elytra). Many are predatory as larvae and adults.

rove beetle
rove beetle

Soldier beetles - Cantharidae

Soldier beetle adult


Lady beetles - Coccinellidae

Most people recognize the adult stages of lady beetles but are far less familiar with the egg, larval, and pupal stages of these well-known insects.

Seven-spotted lady beetle
lady beetle adult

lady beetle egg cluster
lady beetle egg cluster

lady beetle larva
lady beetle larva

lady beetle pupa
lady beetle pupa


Predatory midges

Can I actually persuade you to like a maggot? How about if it eats spider mites on your plants? Meet the predatory gall midge - Feltiella sp.

Feltiella predatory midge

Not convinced you like maggots? How about if they eat the aphids on your plants? Meet Aphidoletes, the aphid midge.

aphid midge
Aphidoletes aphid midge

Hover flies - Syrphidae

Many people recognize hover flies as they hover over flowers searching for pollen and nectar but do not recognize the larvae, which are predatory on aphids.

hover fly adult
hover fly adult

Another maggot that eats aphids, a hover fly. The larva of Scaeva resembles a caterpillar leading some to kill it.

hover fly larva
Scaeva sp. larva

Long Legged Fly - Dolichopodidae
Long legged fly
long legged fly adult

Original publication: 6/3/2016
Last update: 6/9/2016

Author: R.L. Rosetta, Extension Nursery Integrated Pest Management, Department of Horticulture, Oregon State University

Website editor:
Robin Rosetta

Page last modified 6/9/16



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