Presentation on theme: "Insects and Diseases. EGG-LARVA-PUPA-ADULT Larva: ◦ Several instars ◦ Molt between each ◦ Most growth in final stages ◦ All growth occurs as larva."— Presentation transcript:
Insects and Diseases
Larva: ◦ Several instars ◦ Molt between each ◦ Most growth in final stages ◦ All growth occurs as larva
Pupa: ◦ Resting stage ◦ Some insects pupate in cocoons ◦ Little or no movement ◦ Wings appear here
Adult: ◦ Adult stage often appears as vastly different than larva stage. ◦ Larva and adults may feed on completely different sources of food.
EGG-NYMPH STAGES- ADULT
Nymph stages are similar in appearance to the adult stage except for SIZE (grasshoppers) Lack wings Several instars Growth Nymph stages generally feed on the same food sources as adults.
Adults ◦ No more growth ◦ Wings ◦ Able to reproduce
Some insect species complete their lifecycle several times each year (known as generations or broods). Other insect species may require a number of years to complete one life cycle (17 year cicada).