Across
- 5. mandibles
- 8. featherlike
- 10. tracheal
- 12. metamorphosis
- 16. chelicerata
- 18. compound
- 19. aquatic
Down
- 1. spinnerets
- 2. jointed
- 3. molting
- 4. liquefy
- 6. animals
- 7. spiders
- 9. Exoskeleton
- 10. two
- 11. thorax
- 13. malpighian
- 14. open
- 15. waterproof
- 17. parasitic