Class Arachnida Notes

Class Arachnida

Characterized by…..

Class Arachnida

Characterized by…..

1. two body parts…..

Class Arachnida

Characterized by…..

1. two body parts…..

Cephalothorax – fused head and chest

Class Arachnida

Characterized by…..

1. two body parts…..

Cephalothorax – fused head and chest

cephalo = head

Class Arachnida

Characterized by…..

1. two body parts…..

Cephalothorax – fused head and chest

cephalo = head thorax = chest

Class Arachnida

Characterized by…..

1. two body parts…..

Cephalothorax – fused head and chest

cephalo = head thorax = chest

Abdomen

Class Arachnida

Characterized by…..

1. two body parts…..

Cephalothorax – fused head and chest

cephalo = head thorax = chest

Abdomen

2. eight legs, all attached to the cephalothorax.

Order Araneae - Spiders

Chelicerae – fangs

Pedipalps – Leg-like

Abdomen – terminates with a pair of appendages called spinnerets (produce silk)