Which of the following is NOT a common insect affecting interior plants?

In the context of common insect pests that affect interior plants, grasshoppers are typically not a concern. Grasshoppers are primarily outdoor insects that thrive in gardens, grasslands, and fields, where they feed on various types of vegetation. Unlike aphids, spider mites, and mealybugs, which are known to infest and damage indoor plants, grasshoppers are rarely found in indoor environments.

Aphids, spider mites, and mealybugs are common pest problems for interior plants. Aphids are small, soft-bodied insects that suck plant sap, often leading to wilting and distortion of new growth. Spider mites are tiny, are a common issue, especially in dry indoor conditions, and can cause stippled leaves due to their feeding. Mealybugs produce a sticky substance and cotton-like wax which can lead to mold growth on plants. These pests pose significant risks to the health of houseplants, making grasshoppers an unlikely choice in this context.