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

Can you name these Famous Uniramians?

Would you like to taste these Uniramians???

Subphylum Uniramia Centipedes Millipedes Insects ..over 900 000 types

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

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

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

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

Insect Societies

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)

Bees, ants and wasps- females are workers

Termites- male & female workers

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

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

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

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

Waggle dance: Signals food is over 50m away