1. Subphylum Crustacea
Arthropods 2

2. Subphylum Myriapoda Class Chilopoda: Centipedes
Up to 177 segments
1 pair of legs on each segment
Poisonous
Examples: centipedes

7. Subphylum Myriapoda Class Diplopoda
2 pairs of legs on each segment
Emit a foul smell instead of poison
Example: millipedes

8. Millipede

9. Millipede

10. Giant African Millipede

11. Class Arachnidan 8 legs No wings or antennae Cephalothorax and abdomen
Incomplete metamorphosis
Squirt digestive juices then suck up their meal
Examples: Spiders, mites, ticks and scorpions

12. Class Arachnida Order Araneae: Spiders
Fangs to kill prey and deliver venom
Spinnerets to make silk
4 pairs of light sensing eyes
43,000+ species of spiders!!! 
bird eating spider

13. Brown Recluse Bite

14. Brown Recluse Bite

15. Brown Recluse Bite

16. Class Arachnida Order Scorpionida: Scorpions
1300 species
Claws for grasping prey
Tail with venom gland and stinger
Have hair sensory organs
Scorpion
Scorpions

17. Great Hairy Scorpion – largest in US (up to 6”)

18. Scorpion’s glow under black light

19. Class Arachnida Order Acari: Ticks & Mites
Most are parasites that feed on blood or hair
Cause skin rashes, allergies and spread diseases
ticks