Dance flies
Dance flies are true flies in the family Empididae. Males often perform aerial “dances” while offering prey as nuptial gifts to females.
Darkling beetles
Darkling beetles are beetles in the family Tenebrionidae. Many species are adapted to arid environments and some are pests of stored products.
Darners
Darners are large dragonflies in the family Aeshnidae. They are powerful fliers and are often seen patrolling near water bodies.
Deathwatch beetles
Deathwatch beetles are beetles in the family Ptinidae. The larvae bore into wood, and the adults make ticking sounds in old wooden structures.
Deer flies
Deer flies are biting flies in the family Tabanidae. Females feed on the blood of mammals, and their bite can be painful.
Dermestid beetles
Dermestid beetles belong to the family Dermestidae. They feed on dry animal material and are used in museums to clean skeletons.
Dobsonflies
Dobsonflies are large insects in the order Megaloptera. The males have long mandibles, and the aquatic larvae are known as hellgrammites.
Dog fleas
Dog fleas (Ctenocephalides canis) are parasites that feed on the blood of dogs and other mammals. They can also bite humans.
Dragonflies
Dragonflies are insects in the order Odonata. They are skilled aerial predators with large eyes and two pairs of strong, transparent wings.
Drain flies
Drain flies, also known as moth flies, are small flies in the family Psychodidae. They breed in moist organic material such as drain sludge.
Dung beetles
Dung beetles are beetles in the family Scarabaeidae. They feed on feces and play a vital role in recycling nutrients in ecosystems.