What's eating my begonia 'selph's mahogany'?

Begonia 'Selph's Mahogany' is a cane-type houseplant most threatened by mealybugs and spider mites. Mealybugs hide in leaf axils and along stems; mites thrive in dry indoor air. Inspect weekly, isolate new plants, and maintain humidity above 50% to keep infestations at bay.

White cottony clusters in leaf axils and along stems; sticky honeydew residue and stunted new growth. Dab colonies with a cotton swab dipped in 70% isopropyl alcohol; follow with a neem oil spray weekly for four weeks. Isolate the plant immediately.

Fine stippling on upper leaf surfaces, tiny webbing on undersides; leaves yellow and drop in severe cases. Rinse foliage with a strong water spray; apply insecticidal soap or dilute neem oil every five to seven days until clear. Boost ambient humidity.

Silver-streaked or bronzed leaf surfaces; distorted, curled new leaves and flower buds. Remove heavily infested leaves, then treat with insecticidal soap or spinosad spray. Sticky yellow traps help monitor and reduce adult populations.