1. How could you tell a spider apart from a crayfish?
What is the difference between these mouthparts:
chelicerae, pedipalps, mandibles?

2. Can you name these Famous Uniramians?

3. Would you like to taste these Uniramians???

6. Subphylum Uniramia
Centipedes
Millipedes
Insects
..over types

7. Centipedes & Millipedes: long, worm like, many segments with legs
CENTIPEDES- carnivores
-use poisonous claws
MILLIPEDES- detritus feeders
- curl up in ball to hide

8. Characteristics of INSECTS
3-part body
3 pairs of legs
(attached to thorax)
Also, usually:
One pair antennae
Compound eyes
Wings (2 pairs)
Tracheal tubes

11. Feeding 3 pairs of appendages used as mouth parts (rip & tear) Saliva
Leg hairs

12. Movement 3 pairs walking legs- spines, hooks LG muscles operate wings
Requires lots of energy (LG mitochondria)

13. Insect Societies

14. Insect Societies
Different “castes” or types of individuals to different jobs
Reproductive females “Queens”
Reproductive males  fertilize Queen’s eggs
Workers Do all jobs EXCEPT reproduction
(watch young, get food, build home etc)

15. Bees, ants and wasps- females are workers

16. Termites- male & female workers

17. Insect Communication -sound /visual / chemical signals
Ex)
Male crickets rub forewings together and chirp to find mates

18. Insect Communication Ex)
Male fireflies “FLASH” using light making organ on abdomen

19. Insect Communication Pheremones:
chemical signals that affect behaviour &/or development
Can signal death / finding food
Can control colony
Eg) Queen bee prevents development of rival Queen
 Makes workers unable to lay eggs

20. Honeybee Communication
Use sound,movements & pheremones
Round dance:
Signals food is less than 50m away

21. Waggle dance: Signals food is over 50m away