Insects Flashcards
Two pairs of wings (front pair thick and leathery, acting as wing cases, back pair
membranous); armored exoskeleton; biting and chewing mouthparts; complete
metamorphosis; largest order of insects
Coleoptera: beetles, weevils
Two pairs of membranous wings; chewing or sucking mouthparts; many have
posterior stinging organ on females; complete metamorphosis; many species social;
important pollinators
Hymenoptera: ants, bees, wasps (190,000)
One pair of wings with hind wings modified into halteres (balancing organs); sucking,
piercing, or lapping mouthparts; complete metamorphosis; larvae are grublike
maggots in various food sources; some adults are disease vectors
Diptera: flies, mosquitoes (190,000)
Two pairs of colorful wings covered with tiny scales; long tubelike tongue for sucking;
complete metamorphosis; larvae are plant-feeding caterpillars; adults are important
pollinators
Two pairs of colorful wings covered with tiny scales; long tubelike tongue for sucking;
complete metamorphosis; larvae are plant-feeding caterpillars; adults are important
pollinators
Two pairs of membranous wings; piercing or sucking mouthparts; incomplete
metamorphosis; many plant feeders; some predatory or blood feeders; vectors of
plant diseases
Hemiptera: true bugs; assassin bug,
bedbug, chinch bug, cicada (100,000)
Two pairs of wings (front pair leathery, back pair membranous); chewing mouthparts;
mostly herbivorous; incomplete metamorphosis; powerful hind legs for jumping
Orthoptera: crickets, grasshoppers
30,000
Two pairs of long, membranous wings; chewing mouthparts; large eyes; predatory
on other insects; incomplete metamorphosis; nymphs aquatic; considered earlydiverging
insects
Odonata: damselflies, dragonflies (6,500)
Wingless, laterally flattened; piercing and sucking mouthparts; adults are
bloodsuckers on birds and mammals; jumping legs; complete metamorphosis; vectors
of plague
Siphonaptera: fleas (2,600)
Wingless ectoparasites; sucking mouthparts; flattened body; reduced eyes; legs
with clawlike tarsi for clinging to skin; incomplete metamorphosis; very host specific;
vectors of typhus
Phthiraptera: sucking lice (2,400)
Two pairs of membranous wings when present; some stages wingless; chewing
mouthparts; social species; incomplete metamorphosis
Isoptera: termites (2,000)