Aphids

There are two main aphid pests of asparagus:

Cotton aphid (Aphis gossypii)
Potato aphid (Macrosiphum euphorbiae)

Cotton Aphid (Aphis gossypii) Resource List

CABI resources

Aphis gossypii (cotton aphid) | Access Required Cotton aphid: Aphis gossypii | Plantwise Knowledge Bank

University resources

UC: Cotton aphid TAMU: Cotton Aphids OSU: Melon or Cotton Aphid

Other resources

Koppert: Cotton aphid - Biocontrol, Damage and Life Cycle Bayer AU: Cotton aphid

Potato Aphid (Macrosiphum euphorbiae) Resource List

CABI resources

Macrosiphum euphorbiae (potato aphid) | Access Required

University resources

UMN: Potato Aphid Identification OSU: Potato Aphid

Other resources

Bayer: Potato Aphid Koppert: Potato aphid - Biocontrol, Damage and Life Cycle SASA Gov: Potato Aphid