Test 3 Flashcards
Why know insect structure?
Know how to control and id.
3 regions
Head-food intake, sensory system
Thorax- movement
Abdomen-repro,digestion.
Insects skeleton, purpose, muscle attachment/why?
Exoskeleton
Protect internal organs
Hinged joints inside wall
Flexibility
Scleritis
Hard plates of exoskeleton
2 layers
Cutical -procuticle inside wall-harden 24h -exocuticle outside wall-harden24h -epicuticle rain keep from suffocating Epidermis Setae hair
head
5 or 6 fused segments
Eye types (2)
Compound
Ocelli single eye
Antenna
Feel vibs, classification, & gender
Mouthparts
Chewing
Piercing sucking
Chewing-
Mandibles projects like teeth, side of jaw. Work sideways, tear leaf material
Maxillae behind- push food down
Palp
Feelers for taste smell touch
Lips of chewing insects
Labrum- keep food from coming up
Labium- food in, push food receptors
Piercing sucking
Labrium- beak
Stylets-straw for sucking
Puncture plant, release enzymes, suck soup
Thorax
11 fused segments
Spiracles
Breathing system
Insect legs
Cox-attachment Throchanter- attachment Femur- thy Tibia- calf, shin/ short running strides Tarsus- foot
Wings
2pair except fly family
Abdomin
10 or 11 segments
Memebrains- food
Cerci
Flow in wind
Back of body
Look like antenna
External repro
8th and 9th segment
Ovipositor
Aedeagus
Female repro
Male repro
Why are insects important?
Insect pollination
Food animals/humans
Leading consumer of plants
decomposes
Egg
Laid near food, protected location
Molting
Shedding new exoskeleton
Hormones released in blood
Instar
Between molts.
1_______2molt_______3ed molt
1instar. 2nd instar
Incomplete met
Gradual
Nymphs
Young insect
Complete met
Complete change Egg Larvae Pupa Adult
Larva types
Catipiller bf/moth
Grub whasp/ beetle
Maggot fly fam
Molting hormons
Ecdysone tight exoskeleton Juvenile - what life stage Low- pupa High larvae None adult
Hemolymph
Insect blood
Igr
Insect growth regulator
Aphid
Might be winged
Likes plants in flower/anything