Pest: Thrips (Thysanoptera)

Pest Type: Insect Pest

Major Identifying Features: Tiny, slender insects that puncture host tissue and suck the contents, adults are narrow, less than 1/20 inch long, have long fringes on the margins of their wings, females lay tiny eggs on or within plant tissue, larvae are translucent white to yellow

Life Cycle: Complete metamorphosis, 4 stages (egg, larva, pupa, adult), several generations per year

Pest Rating: Minor

Management Rating: Easy to moderate

Host/Season/Outbreak Information: Hosts include flowers, young tissue in buds, central terminals

Damage Information: Thrips feeding can stunt plant growth, can discolor and distort plant parts, black excrement can be seen, thrips reduce the aesthetic value but rarely seriously damage or kill a plant, certain thrips are beneficial predators

Management Options: Cultural control by proper irrigation (avoid over irrigation and fertilizers), by replacing problem plants, by controlling dust, by pruning invested plants, chemical control is not effective


Pests of Landscape Trees and Shrubs (Book)


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