Aphids

The main aphid pests of leafy salads, celery & watercress are:

Currant-lettuce aphid (Nasonovia ribisnigri)
Willow-carrot aphid (Cavariella aegopodii)
Lettuce-root aphid (Pemphigus bursarius)
Peach-potato aphid (Myzus persicae)
Potato aphid (Macrosiphum euphorbiae)

Currant-Lettuce Aphid (Nasonovia ribisnigri) Resource List

AHDB resources

How to monitor and control the currant-lettuce aphid Biology and control of currant-lettuce aphid (Nasonovia ribisnigri) Lettuce: Evaluating aphid control strategies

CABI resources

Nasonovia ribisnigri (currant-lettuce aphid) | Plantwise Knowledge Bank | Access Required Nasonovia ribisnigri (currant-lettuce aphid) | Access Required

University resources

Warwick: Lettuce aphid forecasts 2025 Warwick: Biology and control of currant lettuce aphid Nasonovia ribisnigri

Other resources

Rothamsted: East-West divide in lettuce pests threatens UK crop yields, study finds Bayer AU: Currant lettuce aphid

Willow-Carrot Aphid (Cavariella aegopodii) Resource List

AHDB resources

Life cycle and identification of crop damage caused by the willow-carrot aphid Carrots: Optimising control of willow-carrot aphid and carrot fly

CABI resources

Cavariella aegopodii (carrot-willow aphid)

University resources

Warwick: Improving control of willow-carrot aphid UC: Willow-Carrot: Cilantro and Parsley

Other resources

Bayer: Willow Carrot Aphid

Lettuce-Root Aphid (Pemphigus bursarius) Resource List

AHDB resources

Management of lettuce root aphid IPM strategies for the control of aphids

CABI resources

Pemphigus bursarius (lettuce aphid) | Access Required

University resources

Warwick: Lettuce root aphid UC: Lettuce Root Aphid Lettuce aphid forecasts 2025

Other resources

RHS: Root aphids PNW: Lettuce root aphid | Handbook

Peach-Potato Aphid (Myzus persicae) Resource List

AHDB resources

Basic biology of the peach-potato aphid Combating resistance to insecticides in aphid pests of potatoes

CABI resources

Myzus persicae (green peach aphid) | Access Required

University resources

UC: Aphids Warwick: Aphid control in lettuce and brassica crops (Defra + HDC) EDIS: Green Peach Aphid, Myzus persicae

Other resources

Koppert: New strain of Green Peach Aphid, Myzus persicae, requires more aggressive beneficial insects Bayer: Peach Potato Aphid

Potato Aphid (Macrosiphum euphorbiae) Resource List

AHDB resources

Identification of potato aphid and transmitted virus

CABI resources

Macrosiphum euphorbiae (potato aphid) | Access Required Macrosiphum euphorbiae (potato aphid) | Technical Factsheet | Access Required

University resources

UF: Potato Aphid, Macrosiphum euphoribae UH: Crop Knowledge Master: Macrosiphum euphorbiae OSU: Potato Aphid

Other resources

Bayer: Potato aphid Koppert: Potato aphid - Biocontrol, Damage and Life Cycle PNW: Potato, Irish-Aphid | Handbook