Lygus Bug

Common Name: Lygus bug

Genus: Lygus

Species: hesperus

Identification: see lifecycle

Lifecycle: In most regions the bug overwinters as adults in hibernation. The egg stage requires 8 days and the 5 nymphal stages about 11 days. The adults are small, about 1/4-inch long, and the female lays eggs in the flowers, buds, bracts, squares, nodes and internodes. With feeding, nymphs become dark green with 4 noticeable black spots on the thorax. In the summer, a generation requires from 20 to 30 days.

Geographic Distribution: This species occurs primarily throughout the Pacific western states.

Damage and Treatment: The insect injures the tender growing parts causing flowers and buds/squares to drop. In addition to the physical injury, there is a toxic reaction to the plant cells near the puncture point. 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.

Alfalfa

Almonds

Cavalo Broccolo

Chinese Broccoli

Cotton

Fruits Nuts Trees and Vegetables

Soybeans

Tobacco

Alfalfa Caterpillar Colias

Alfalfa Looper

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

Armyworms

Barnyardgrass Echinochloa

Bermudagrass

Black Nightshade

Bluegrass, Annual

Boll Weevil Anthonomus

Cabbage Looper Trichoplusia

Cabbage Webworm

Codling Moth Cydia

Colorado Potato Beetle Leptinotarsa

Common Cocklebur Xanthium

Corn Earworm

Crabgrass Digitaria sanguinalis, Digitaria ischaemum, Digitaria ciliaris

Cupgrass Eriochloa gracilis, Eriochloa villosa

Cutworms Agrotis ipsilon, Agrotis orthogonia, Peridroma saucia

Dallisgrass

Diamondback Moth

Eastern Nightshade Solanum americanum, Solanum nigrum, Solanum ptycanthum, Solanum saccachoides

European Corn Borer Ostrinia

Fall Armyworm Spodoptera

Flea Beetles

Foxtail Species Setaria venticillata, Setaria faberi, Setaria viridis, Setaria glauca

Goosegrass Eleusine

Grasshopper Melanoplus sanguinipes, Camnula pellacida

Green Peach Aphid Myzus

Jimsonweed Datura

Johnsongrass seedling Sorghum

Kochia Kochia

Lambsquarters Chenopodium

Leafhoppers

Leafminer Liriomyza trifolii, Liriomyza sativa, Liriomyza huidobrensis

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

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

Northern Corn Rootworm Diabrotica longicornus barberi, Diabrotica virgifera virgifera

Nutsedges Cyperus rotundus, Cyperus esculentus

Panicum, Fall Panicum

Panicum, Texas Panicum

Pear Psylla Cacopsylla

Pennsylvania Smartweed Polygonum

Pigweed, Redroot Amaranthus

Pink Bollworm Pectinophora

Prickly Sida Sida

Purslane

Quackgrass

Ragweeds Ambrosia artemisiifolia, Ambrosia trifida

Sandbur, Field Cenchrus

Shattercane Sorghum

Sicklepod Cassia

Silverleaf Whitefly Bemisia tabaci, Bemisia argentifolii

Southern Corn Rootworm Diabrotica

Spider Mites Tetranychus urticae, Tetranychus turkestani, Tetranychus pacificus, Tetranychus cinnabarinus

Spurred Anoda Anoda

Stink Bug Nezara viridula, Chlorockroa say, Euschistus consperus

Sweet Potato Silverleaf Whitefly Bemisia tabaci, Bemisia argentifolii

Tarnished Plant Bug Lygus

Thrips

Tobacco Budworm Helicoverpa

Velvetleaf Abutilon

Venice Mallow Hibiscus

Whiteflies

Wild Mustard Brassica

Wild Sunflower Helianthus

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