It's so small, but don't let its size fool you. Experts say this insect could cause some big problems for farmers who grow Citrus Plants.

"Is a sucking pest and when it sucks plants, it transmits a disease."

It's known as the Asian Citrus Psyllid and Officials with the Arizona Department of Agriculture aay now that its made its way to Yuma County -- more specifically in southern San Luis, It doesn't mean it's infected to damage crops.

"They will do tests on that particular psyllid to find out if it is in fact infected."

Dr. Ian Watkinson says if the pests are infected, they could have deadly effects on citrus plants.

"It's called citrus greening, and the plant goes a kind of yellowy color, and you get patches of moldy green on the leave and eventually the plant will die."

The pest have destroyed citrus crops in Florida and parts of Mexico, but Ag Officials say it might not like our Desert Weather Conditions.

"It's possible that we would have a little bit more protection here in Yuma because of our high temperatures, but those are things we just do not know yet."

And now local citrus farmers and experts wait in anticipation to see if the pests multiply.

"We hope that this is just a single specimen and no more."