Are the wings and bodies of aphids covered in a white, powdery substance?

Aphids are small sap-sucking insects that typically do not have their wings and bodies covered in a white, powdery substance. Instead, they often appear as small green, black, or brown insects. While some aphids may have a waxy coating or could be affected by a powdery mildew due to environmental factors or other influences, it is not a general characteristic of aphids themselves. Therefore, stating that it is false that wings and bodies of aphids are covered in a white, powdery substance accurately reflects their typical appearances and behaviors in their natural habitats.