Flea Beetles in the Low Desert

DESCRIPTION:

Several species of flea beetles occur in Arizona. The adults are tiny beetles ranging from 1/16 to 1/4 inch long and are various colors, including black, greenish or bluish black, green or yellow. They have enlarged hind legs which enable them to jump like fleas. Larvae are slender white wormlike creatures that usually feed on roots and stems underground.

DAMAGE:

One species attacks young vegetables, particularly broccoli, cabbage and cauliflower relatives but also feeding on the leaves of potato, young corn, carrot, bean and other related vegetables. Another species attacks Mexican primrose and grapes, giving them a tattered appearance. Another brownish-black species attacks Dichondra lawns.

MANAGEMENT:

Because of their ability to jump quickly away from the plant, flea beetles are difficult to control. Dust young plants with carbaryl. An alternative is to spray the plants with the fungus Naturalis-O. Always read and follow the instructions on the insecticide label. Fortunately, as plants age they become much less susceptible to damage.