Pepper Maggot Flies
Pepper maggot flies are attracted to peppers, wishing to consume the fruit of the brightly colored pepper flesh. They are recognizable by the three yellow stripes down their back their damage to the fruit is belied by tiny puncture in the skin where the eggs have been laid and an early coloring of the flesh to red.
Green Peach Aphid
Green peach aphids are small pear shaped insects that suck sap from the pepper plant leaves. Thin, splotchy and pock-marked leaf surfaces are the result of their work. Their secretions called honeydew stick to the foliage and attract sooty mold which may be more noticeable than the aphids themselves.
Flea beetles feast on the pepper plant foliage cutting small perfectly round holes into the leaves and consuming the excised material. They are recognizable by their dark color and on some species by their yellow striped wings.
Two types of white fly are particularly attracted to peppers and do the most damage: Silverleaf white fly and greenhouse white fly. White flies are tiny, at 1.5 millimeters in length, and the species type can only be identified under magnification. White flies colonize under the leaves of pepper plants to eat and breed. They sustain themselves by sucking significant quantities of plant sap out via tiny holes they cut into the leaves. Like aphids, they secrete honeydew where they feed, which attracts the secondary problem of sooty mold.