Horticulture/Pests and Diseases of Lactuca

Note to Contributors: The Pest and Disease list pages should always be included on the genus or genera page. These lists should eventually be replaced by a "troubleshooting" section. (This notice will not appear on printouts or on the including page.) Use {{:Horticulture/Pests and Diseases of {{SUBPAGENAME}}}} to include the list below (place it just below "Pests and Diseases")

Pests

Aphids

• Pea Aphid: Acyrthosiphon pisum
• Bean Aphid: Aphis fabae
• Brown Ambrosia Aphid: Dactynotus ambrosiae
• Potato Aphid: Macrosiphum euphorbiae
• Green Peach Aphid: Myzus persicae
• Red Lettuce Aphid: Uroleucon pseudambrosiae
• Cabbage Aphid: Brevicoryne brassicae
• Lettuce Aphid: Nasonovia ribisnigri
• Lettuce Root Aphid: Pemphigus bursarius

Hoppers

• Aster Leafhopper: Macrosteles facifrons
• Southern Garden Leafhopper: Empoasca solana

Whiteflies

• Silverleaf Whitefly: Bemisia argentifolii
• Greenhouse Whitefly: Trialeurodes vaporariorum

Bugs

• Pale Legume Bug: Lygus elisus
• Western Tarnished Plant Bug: Lygus hesperus
• Tarnished Plant Bug: Lygus lineolaris
• False Cinch Bug: Nysius raphanus
• Garden Fleahopper: Halticus bractatus

Thrips

• Western Flower Thrips: Frankliniella occidentalis

Flies

• American Serpentine Leafminer: Liriomyza trifolii
• Chrysanthemum Leafminer: Phytomyza syngenesiae

Beetles

• Banded Cucumber Beetle: Diabrotica balteata

Flea Beetles

• Palestriped Flea Beetle: Systena blanda
• Redheaded Flea Beetle: Systena frontalis

Caterpillars

• Zebra Caterpillar: Ceramica picta
• Corn Earworm: Helicoverpa/Heliothis zea
• Variegated Cutworm: Peridroma saucia
• Beet Armyworm: Spodoptera exigua
• Yellowstriped Armyworm: Spodoptera ornithogalli
• Cabbage Looper: Trichoplusia ni
• Celery Leaftier: Udea rubigalis
• Alfalfa Looper: Autographa californica Western US
• Celery Looper: Anagrapha falcifera
• Saltmarsh Caterpillar: Estigmene acrea
• Western Corn Rootworm: Diabrotica virgifera virgifera
• Western Yellowstriped Armyworm: Spodoptera praefica
• Angle Shades: Phlogophora meticulosa
• Autumnal Rustic: Eugnorisma glareosa
• Cabbage Moth: Mamestra brassicae
• Common Swift: Korscheltellus lupulina
• Garden Dart: Euxoa nigricans
• Ghost Moth: Hepialus humuli
• The Gothic: Naenia typica
• Grey Chi: Antitype chi
• Heart and Club: Agrotis clavis
• Heart and Dart: Agrotis exclamationis
• Ingrailed Clay: Diarsia mendica
• Large Yellow Underwing: Noctua pronuba
• The Nutmeg: Discestra trifolii
• Setaceous Hebrew Character: Xestia c-nigrum
• The Shark: Cucullia umbratica
• Small Angle Shades: Euplexia lucipara
• Turnip Moth: Agrotis segetum

Slugs and Snails

Diseases

Bottom Rot

• Rhizoctonia

Downy Mildew

Gray Mold

White Mold

• Sclerotinia

Other Problems

Calcium Deficiency