Leafhoppers

Pest: Leafhoppers (rose leafhopper, grape leafhopper, variegated leafhopper, potato leafhopper, aster leafhopper)

Pest Type: Insect Pest

Major Identifying Features: Most species of leafhoppers feed only one or several closely related plant species, adults are slender, wedge-shaped, about 1/4 inch long, varying shades of green, yellow or brown, often mottled, some species blend with their host plant, and some are brightly colored, they jump or move readily when disturbed, adult, nymphs and their cast skins can be found underneath leaves,

Life Cycle: Leafhoppers go through incomplete metamorphosis, female lay eggs in tender plant tissue, eggs can overwinter, wingless nymphs molt 4-5 times before maturing in about 2-7 weeks, no pupal stage, 2 or more generations per year

Pest Rating: Moderate

Management Rating: Difficult

Host/Season/Outbreak Information: Eggs hatch in mid April

Damage Information: Leaves can appear stippled, pale, brown, shoots may curl and die, some species secret honeydew which encourages black sooty mold, some species transmit plant diseases

Management Options: Control is rarely needed, cultural control by removing host plants, insecticidal soap or oils can be applied

Sources:

http://www.ipm.ucanr.edu

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