Dance language of honeybee – Bees “dance” in circles or figure 8s to show others where food is.
Diapause – A pause in development (like insect hibernation) during bad conditions.
Disease and body louse – Lice can spread diseases like typhus to humans.
Diversity in insects – Insects are the most diverse animal group, with millions of species.
Diving beetle feeding habit – These beetles are aquatic predators that eat insects and tadpoles.
Dung beetle biology – These beetles roll and bury animal poop, helping fertilize soil.
Ecdysone – A hormone that controls molting (shedding old skin) in insects.
Ecological advantages of dipteran insects – Flies help by pollinating, breaking down waste, and being food for others.
Ephemeroptera – Mayflies; short-lived adults with aquatic larvae.
Etymology of Hymenoptera – “Hymen” means membrane, “ptera” means wings (wasps, ants, bees).
Etymology of Lepidoptera – “Lepido” = scale, “ptera” = wing (butterflies and moths).
Eusociality – Extreme teamwork; some insects (like ants) have queens, workers, and soldiers.
Evolution of hexapods – Hexapods (six-legged insects) likely evolved from crustacean-like ancestors.
Fire ant adaptation – Fire ants form living rafts in floods and have painful stings.
Firefly bioluminescent organ – Fireflies have light-producing organs to attract mates.
Fly response to a corpse – Flies are among the first insects to arrive at a dead body.
Foraging strategies in Myrmicinae – These ants use trails and teamwork to find and collect food.
Forensic entomology – Using insects to study crimes, especially time of death.
Formic acid – A chemical ants use for defense or attack.
Function of Malpighian tubules – Organs that remove insect waste (like kidneys).
Glucosinolates – Chemicals in mustard/cabbage plants that deter herbivores.
Gossamer-winged butterfly – A group of small, delicate butterflies like blues and coppers.
Gulf fritillary – A bright orange butterfly found in the southern U.S.
“Hair-pencils” in butterfly – Scent-releasing structures used by males to attract females.
Haltere – A small knob that helps flies balance when flying.
Hamulate wing-coupling mechanism – Tiny hooks that connect wings in bees and wasps.
Harvester ant – Ants that collect and store seeds for food.
Hemolymph functions – Insect “blood” that moves nutrients, hormones, and helps with immune defense.
Holometabolous – Insects that go through complete metamorphosis: egg, larva, pupa, adult.
Hornet – A large, social wasp known for strong stings.
Hornworm – A big caterpillar that eats tomato plants.
Horsefly feeding – Female horseflies bite animals to suck blood.
Hydroquinone – A chemical in some beetles used for defense sprays.
Hymenoptera biology – Insects like bees, ants, and wasps with complex societies and stingers.
Hymenoptera sex determination – Males hatch from unfertilized eggs, females from fertilized ones.