Silverleaf Whitefly

Common Name: Sweet Potato Whitefly, Silverleaf Whitefly

Genus: Bemisia tabaci, Bemisia argentifolii

Identification: see lifecycle

Lifecycle: The typical four-winged adult lays as many as 160 eggs per female. The adults live 8 to 12 days, and the total life cycle requires 65 days. Whiteflies are found mostly on the underside of leaves. In California and Arizona, the whitefly overwinters on desert weeds, migrates to cucurbits in January and February and then moves to cotton seedlings.

Geographic Distribution: Florida, Gulf Coast states, Arizona and California.

Damage and Treatment: As with the greenhouse whitefly, nymphs and adults remove nutrients from the plants, resulting in plants with low vigor. As they feed, whiteflies produce large quantities of honeydew, which can reduce cotton quality and interfere with ginning and spinning. Treatment should be made when insect populations and/or damage levels reach economic thresholds. Refer to local University Extension Pest Management Guidelines for specific state thresholds.

Fruits Nuts Trees and Vegetables

Alfalfa Weevil Hypera

Amaranthes Amaranthus palmeri, Amaranthus hybridus, Amaranthus spinosus

Aphids Therioaphis maculata, Dysphis plantaginea, Acyrthosiphon kondoi, Acyrthosiphon kondoi, Acyrthosiphon pisum, Aphis gossypi

Armyworm, Beet Spodoptera

Cabbage Looper Trichoplusia

Codling Moth Cydia

Colorado Potato Beetle Leptinotarsa

Common Cocklebur Xanthium

Cutworms Agrotis ipsilon, Agrotis orthogonia, Peridroma saucia

Fall Armyworm Spodoptera

Green Peach Aphid Myzus

Kochia Kochia

Lambsquarters Chenopodium

Leafminer Liriomyza trifolii, Liriomyza sativa, Liriomyza huidobrensis

Leafroller Archips rosanus, Archips argyrospila, Argyrotaenia velutinana, Choristorenra rosaceana

Lygus Bug Lygus

Nightshades Solanum americanum, Solanum nigrum, Solanum ptycanthum, Solanum saccachoides

Panicum, Fall Panicum

Pear Psylla Cacopsylla

Pennsylvania Smartweed Polygonum

Pigweed, Redroot Amaranthus

Stink Bug Nezara viridula, Chlorockroa say, Euschistus consperus

Sweet Potato Silverleaf Whitefly Bemisia tabaci, Bemisia argentifolii

Tarnished Plant Bug Lygus

Tobacco Budworm Helicoverpa

Velvetleaf Abutilon

Venice Mallow Hibiscus

Wild Mustard Brassica

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