Maple aphid

Systematic position: Drepanaphis keshenae belongs to the order Hemiptera and the family Aphididae. This insect is a specialized feeder that has evolved to survive and thrive specifically on maple species, making it a significant subject of study in arboriculture and entomology.

Host plants: The primary hosts for this species are various types of maple trees (Acer). Infestations are frequently observed in ornamental urban landscapes, forests, and nursery settings where these trees are planted in high density.

Biology and life cycle: The lifecycle of Drepanaphis keshenae is characterized by high reproductive rates during the growing season. The species typically overwinters in the egg stage, with the population expanding rapidly through asexual reproduction (parthenogenesis) as temperatures rise in spring and summer.

Damage and severity: The aphid feeds on plant sap by piercing leaf tissues, which causes foliage curling, yellowing, and potential premature leaf drop. The secretion of honeydew promotes the growth of sooty mold, which impairs photosynthesis and significantly reduces the aesthetic quality of the infested trees.

Control measures: Integrated Pest Management (IPM) is essential for managing this aphid.

• Regular monitoring of tree health and aphid populations.
• Application of horticultural oils or insecticidal soaps for early infestations.
• Using systemic insecticides for severe outbreaks.
• Promoting natural predators like ladybugs, lacewings, and parasitic wasps.