Hackberry butterflies
Hackberry butterflies are butterflies in the genus Asterocampa. They are often found near hackberry trees, which serve as their larval host plants.
Hairy caterpillars
Hairy caterpillars are the larvae of various moths or butterflies. Their dense hairs can sometimes cause skin irritation or allergic reactions.
Halictid bees
Halictid bees, also known as sweat bees, are small bees in the family Halictidae. Some are attracted to human sweat for its salt.
Harlequin bugs
Harlequin bugs are brightly colored stink bugs in the genus Murgantia. They feed on cruciferous vegetables and can be garden pests.
Hawk moths
Hawk moths are moths in the family Sphingidae. They are fast fliers and some species hover like hummingbirds while feeding on nectar.
Head lice
Head lice (Pediculus humanus capitis) are parasitic insects that infest the human scalp and feed on blood. They spread through close contact.
Heliothine moths
Heliothine moths are a group of moths in the subfamily Heliothinae. Some, like the corn earworm, are serious agricultural pests.
Hemipterans
Hemipterans are insects in the order Hemiptera, commonly known as true bugs. They have piercing-sucking mouthparts and include aphids, cicadas, and shield bugs.
Hercules beetles
Hercules beetles are large beetles in the genus Dynastes. Males have large horns and are among the strongest insects relative to body size.
Hoverflies
Hoverflies, also called flower flies, are flies in the family Syrphidae. Many species mimic bees or wasps and are important pollinators.
Horse flies
Horse flies are large, biting flies in the family Tabanidae. Females feed on blood and can be pests to humans and livestock.
Hornets
Hornets are large social wasps in the genus Vespa. They build paper nests and can deliver painful stings when disturbed.
Horntails
Horntails are wood-boring insects in the family Siricidae. Females have a long ovipositor used to lay eggs in wood.
House centipedes
House centipedes are fast-moving arthropods with many legs. Though not insects, they are beneficial predators of household pests.
Houseflies
Houseflies (Musca domestica) are common flies in human dwellings. They can transmit diseases as they move between waste and food.
Hummingbird moths
Hummingbird moths are day-flying moths in the family Sphingidae. They hover while feeding on nectar and resemble hummingbirds in flight.
Hymenopterans
Hymenopterans are insects in the order Hymenoptera, including ants, bees, and wasps. Many are social and some play key roles in pollination or pest control.