What's eating my begonia metallica?

Begonia metallica is a hairy-leaved shrub begonia houseplant whose textured stems shelter mealybugs, while the broad metallic leaves attract thrips that rasp the surface. Spider mites take hold in low indoor humidity. The hairy texture complicates spray coverage. Mealybugs are the hardest to eliminate and cause the most ongoing damage.

White cottony wax tucked into stem hairs and leaf axils; honeydew stickiness; stunted, yellowing leaves Use alcohol swabs at stem joints; apply insecticidal soap ensuring penetration through the hairy surface; repeat weekly; isolate the plant immediately

Silver-streaked patches across the metallic leaf surface; frass specks on undersides; new growth distorted Apply spinosad spray; introduce Amblyseius cucumeris; remove badly scarred leaves; use blue sticky traps to track adult populations

Pale stippling on the leaf's metallic sheen; fine webbing on undersides; leaves dull and curl at edges Increase humidity; spray undersides with neem oil; repeat every three days for two weeks; avoid placing near heating vents