Mygalomorphae
Tarantulas, many trapdoor spiders, funnel-web spiders, and relatives
- Chelicerae
- Arranged roughly parallel to one another rather than opposing like pincers.
- Respiration
- Usually two pairs of book lungs.
- Silk and lifestyle
- Many are sedentary burrow or retreat dwellers. Their silk may look simple, but it can extend the animal’s sensory world and play a direct role in prey capture.





