What's eating my calathea setosa?

Calathea Setosa (Ctenanthe setosa) is most frequently attacked by spider mites, especially in centrally heated rooms with dry air. Mealybugs and scale also infest this species. The silver-banded leaves show mite stippling readily. Keeping humidity high and regularly cleaning the broad leaves dramatically reduces the risk of all common indoor pests.

Pale stippling dulls the silver banding; fine webbing accumulates on leaf undersides; leaves yellow and drop Boost humidity to 60%+; shower foliage to knock off mites; apply neem oil or insecticidal soap spray every 5–7 days for a month

White cottony clusters in leaf axils and along the central midrib; sticky honeydew; leaves wilt Dab infestations with isopropyl alcohol; spray the full plant with insecticidal soap; isolate from neighbouring plants immediately

Brown shell-like bumps on stems and petioles; honeydew secretion; declining plant vigour Scrape off with a damp cloth; treat with neem oil or horticultural oil; retreat weekly until no live scales remain