What's eating my bullate nautilocalyx?

Nautilocalyx bullatus (Bullate Nautilocalyx) is a tropical gesneriad with strongly bullate (blistered) foliage, grown in warm, humid conditions. Its textured leaves provide ideal hiding spots for mealybugs. Spider mites are a risk when humidity drops. Fungus gnats attack in overly wet, peat-based compost. Inspect the leaf surface carefully.

Cottony white clusters lodged in leaf blisters, stem joints, and root zone; honeydew and sooty mold; overall decline Probe textured leaf areas with an alcohol-dipped cotton bud; treat with neem oil spray; check roots for root mealybugs if the plant continues to decline

Pale bronzing and fine webbing on the undersides of bullate leaves; foliage looks dull and dusty Maintain high humidity (60%+); rinse plant gently; apply neem oil or miticide; isolate from susceptible neighbors

Larvae gnaw on roots in wet compost; wilting and yellowing despite regular watering Allow the upper compost layer to dry between waterings; drench with Bti; use yellow sticky traps to break the adult cycle