Presentation on theme: " Metamorphosis- a change in form from one stage to the next of an insect Larva-worm like stage of insects Pupa-stage where insect turns from larva."— Presentation transcript:
Metamorphosis- a change in form from one stage to the next of an insect Larva-worm like stage of insects Pupa-stage where insect turns from larva to adult Nymph- a young insect in stage where it looks like a young adult Chrysalis- another name for pupa stage Molt- shed Instars- larva stages
EGG A female insect lays eggs Eggs are often covered by an egg case which protects and holds them together
NYMPH Nymphs do look like small adults, but usually don't have wings. Nymphs molt (shed) their exoskeletons and replace them with larger ones several times as they grow Most nymphs molt 4-8 times.
ADULT Insects stop molting when they reach their adult size. By this time, they have also grown wings.
EGG The female lays eggs Usually found on the undersurfaces of leaves.
LARVA Larva hatch from the eggs Do not look like adult insects. Worm-like shape. Larvae molt several times and grow slightly larger. Caterpillars, maggots, and grubs are all just the larval stages of insects
PPUPA LLarva make cocoons around themselves. DDon't eat while inside their cocoons AAlso known as Chrysalis DDormant during pupa stage TTheir bodies develop into an adult shape with wings, legs, internal organs, etc. TThis change takes anywhere from 4 days to many months.
ADULT Inside the cocoon, the larvae change into adults After a period of time, the adult breaks out of the cocoon.
A. Process called Metamorphisis i.a profound change in form from one stage to the next in the life history of an organism ii.Temperature effects how quickly metamorphosis occurs B. Egg Larva Pupa Adult i.Pupal Stage also known as Chrysalis ii.Dormant during pupal stage
A. L1-L5 B. Determined by taking head measurement C. Eats Mustard Family (EX: WFP) D. Molts 2-3 times in first week of hatching E. L1 i.Larva chews way out of egg ii.Head grows slowly as body grows large F. L2-L5 i.L4&L5: Most eating occurs here
A. 3 part body i.Head, thorax, abdomen B. Proboscis: mouth; take in water and nutrients i.Length varies between species and types of flowers that are their primary food source C. Antennae: sensory structure to find food D. Hair-like structures: sense of taste E. Claws: to cling to surfaces F. Scales: pigment and insulation G. Spiracles: Facilitate gas exchange
A. Silk glands in head i.Used to attach to surfaces B. Frass: waste i.Used as fertilizer C. Open Circulatory System D. Floral nectar primary food source E. Exoskeleton color due to amount of sunlight CWB is exposed to
Adults can emerge from pupa in 1 minute Wings take 15 minutes to expand Wings take 1-2 hours to harden so they can fly