Vegetables play a vital role in the economy and nutrition of smallholder farmers in rural and peri-urban areas of Tanzania. Solanaceous vegetables, especially tomato and sweet pepper, are key horticultural crops for improving farmers’ livelihoods. Income from tomato sales is used for family needs, including the purchase of other foods. Infestation by a plethora of insect pest species constrains production of these crops. Whitefly (Bemisia tabaci Genn.) and South American pinworm (Tuta absoluta Meyrick) cause the most damage.