1. Pests of the greenhouse
By Christopher Rupp

2. thrips
-beneficial species include black hunter thrips and the six spotted thrips -Most adult thrips are slender, minute (less than 1/20 inch long), and have long fringes on the margins of both pairs of their long, narrow wings.

3. aphids
Aphids or "plant lice" are soft bodied pear-shaped insects and are generally less than 1/8 inch long.

4. White flies Whiteflies are tiny, soft bodied insects
The adults coat their bodies, particularly their wings, with this wax-hence the name "whiteflies

5. Fungus gnats
Fungus gnats are tiny flies that don’t bite or spread human pathogens/diseases. The only way they can harm us is through frustration as they invade our houseplants or spring seedlings.
the pests can be vectors for plant diseases

6. Spider mites
One reason that spider mites become a problem is insecticides that kill their natural predators.
classed as a type of arachnid, relatives of insects that also includes spiders, ticks, daddy-longlegs and scorpions

7.
Spodoptera exigua
the beet Spodoptera exigua moth has a wingspan of 25 to 32 mm. Its forewings are mottled gray or brown with a pale spot near the center of each wing. Its hind wings are white with dark veins and have a fringe-like border.
Most chemicals cleared for home garden use will not control this pest adequately.
XenTari is a biological compound based on spores of the bacteria Bacillus thuringiensis var. aizawai (Bt). XenTari works against several species of butterfly and moth caterpillars that can cause serious damage to crops.
Scutello® 2x is a biological compound based on spores of the bacteria Bacillus thuringiensis var kurstaki (Bt). Scutello®2x works against several species of butterfly and moth caterpillars

8. leaf miner
Leaf miners are larvae of various insects: small black flies, moths, sawflies or beetles, many of them specific to certain plants.
The fly that lays the eggs on beets does not lay eggs on any other plant.

9. Mealy bug
Its body is covered with white waxy threads, which often make a chemical pest control little successful.
A female can lay 300 to 500 eggs in a cotton-like pouch made of wax threads.

10. weevils
Adult vine weevils are 8-12 mm long, have a grooved, dull black shell with patches of tiny yellow bristles. As they are well camouflaged and only active at night, they are seldom seen. If they are discovered, they play dead

11. Leaf hopper
Like the whitefly and the aphid Cicadidae produce a sticky substance, honeydew. This substance affects the leaves and fruits by enabling a fungus to grow on it.