Flies

Damaging fly species include:

Swede midge (Contarinia nasturtii)
Cabbage root fly (Delia radicum)
Bean seed fly larvae (Delia platura)
Turnip fly larvae (Delia floralis)

Pest insects in brassica crops: fly pests

Swede Midge (Contarinia nasturtii) Resource Links

AHDB resources

Swede midge control methods Swede midge: monitor, detect and control How to detect and monitor swede midge

CABI resources

The challenge of swede midge management in canola | Access Required Contarinia nasturtii (swede midge) | Plantwise Knowledge Bank | Access Required

University resources

Warwick: Swede midge UMN: Swede Midge UMass: Swede Midge Cornell: Identification - Swede Midge MSU: Swede midge biology and management

Other resources

Bayer: Swede Midge on Broccoli, Cabbage, and Cauliflower

Cabbage Root Fly (Delia radicum) resource links

AHDB resources

Cabbage Root Fly Biology and Management in Brassica Crops Brassicas: treatment to control cabbage root fly Brassicas: comparison of treatments to control cabbage root fly

CABI resources

Delia radicum (cabbage root fly) - Access Required

University resources

UMass: Cabbage Root Maggot Warwick: Cabbage root fly Warwick: Cabbage root fly forecast 2025 Oregon: Cabbage maggot life cycle, monitoring, and identification UNH: Cabbage Maggot

Other resources

Bayer: Cabbage Root Fly

RHS: Cabbage Root Fly

Bean seed flies (Delia platura and Delia florilega) resource links

AHDB resources

Bean seed fly: Identification and control Risk factors and crop damage caused by bean seed flies CP 190: PhD: Development of an integrated strategy for Bean Seed Fly control

CABI resources

Bean Seed Fly | Plantwise Knowledge Bank Bean seed fly datasheet | Access Required

University resources

Warwick: Bean seed fly

RHS resources

Koppert: Bean Seed Fly - Biocontrol, Damage and Identification Thompson & Morgan: Bean Seed Fly RHS: Bean Seed Fly: How to protect germinating seeds

Turnip fly (Delia floralis) resource links

AHDB resources

Turnip sawfly biology and impact on vegetable brassicas and oilseed rape

CABI resources

Delia floralis (turnip maggot) | Access Required

Bayer resources

Turnip Sawfly