Kingdom Animalia Phylum Arthropoda Subphylum Crustacea Lobster Crab

Kingdom Animalia Phylum Arthropoda Subphylum Crustacea Lobster Crab Shri. Mp Crayfish Barnacles Isopods Subphylum Chelicerata Class Merosto. Mata Horseshoe crab Class Arachnida spiders Subphylum Unira. Mia Class Chilopoda centipedes Class Diplopoda Millipedes Class Hexapoda insects

SUBPHYLUM UNIRAMIA

Millipedes vs. Centipedes Class Diplopoda 1. millipedes 2. 2 pairs legs/segment 3. 11 -100 body segments 4. round bodies 5. Habitat- moist areas 6. Diet- herbivores 7. Defense- a. Roll into a ball b. Produce hydrogen cyanide repellant Class Chilopoda 1. Centipedes 2. 1 pair legs/segment 3. About 15 body segments 4. Flat bodies 5. Habitat- moist areas 6. Diet- carnivores 7. Defensea. Venomous maxilliped b. Bite feels like wasp sting

Class Hexapoda Insects

General Body Structure 1. Three body regions a. Head b. Thorax c. Abdomen 2. One pair antennae 3. Six legs

Digestion/Feeding 1. Having different mouthparts reduces food competition among different species. 2. This is probably why insects are such a successful group of organisms. 3. Types: v Chewing- mandibles (grasshopper & most beetles)

Digestion/Feeding v Siphoning- tube for sucking (butterfly) v Piercing & sucking- cut thru skin or plants (mosquito, assassin bug) v Sponging- absorbing food (fly)

1. Open Circulation 2. Has heart that pumps blood into the hemocoel (body cavity) and ostia suck blood back up 3. Not used in gas exchange 4. Distributes nutrients, hormones, pheromones.

Respiration 1. Spiracles- holes in body thru which air enters 2. Tracheal tubes- extend length of body for distribution & exchange of gases.

Thermoregulation 1. Thermoregulationcontrol of body temperature 2. Ectothermic- organisms that cannot control their own body temperature 3. Bodies must warm up before able to fly.

Nervous/Sensory System 1. Compound eyes a. Some images b. Color (UV light) c. Shape d. Movement 2. Some have simple eyes-ocelli

What an insect is looking at… What it actually sees… Compound eye under the microscope.

Nervous/Sensory System 1. Some can detect odorsflies, bees 2. Tympanic membranea. Amplify or detect sound b. Located on legs or abdomen

3. Setae- hairs on legs, body, antennae a. Movement b. vibrations

Reproduction 1. Dioecious 2. Controlled by a. Population density b. Temperature c. Seasons d. Pheromones e. Auditory signals

3. Females may use ovipositer to deposit eggs in soil, tree, leaf, etc.

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Abdomen Thorax Head Mandible Antennae Compound eye Hemi-elytra (partial outer wing) Hind wing (for flight) Abdominal spiracles Jumping leg Tympanic membrane Thoracic spiracles Pronotum- covers thorax Ovipositor External Anatomy of insect 14

Elytraforwing Hindwingflight grasshopper flying beetle flight slo mo Beetles have hard outer wing- elytrathat protects membranous hindwing- for flight Grasshoppers have thinner outer winghemielytra- that protects membranous hindwings used for flight.