What overwintering survival mode does the Woolly Apple Aphid typically employ in warmer climates?

Continuous asexual reproduction while sheltering on the roots where conditions remain stable

The strategy adopted by the Woolly Apple Aphid for overwintering is highly dependent on local climate variability. In regions characterized by consistently milder winters, the environmental pressure for producing specialized, cold-resistant eggs is reduced. Consequently, these populations often maintain themselves year-round through continuous asexual reproduction, leveraging the stability found in sheltered microclimates, particularly on the roots where conditions buffer against surface temperature fluctuations. This path favors individuals prioritizing the highest possible reproductive rate under benign conditions, relying on sheer numbers to persist through minor cold snaps rather than investing the metabolic energy required for a full sexual cycle and egg production.