The Bugs

Class Arachnida (spiders & scorpions)

Even though the number of orders living today in the class arachnida is 11 you will mainly be concerned with the order aranae (spiders). There is a great variety of families and species of spiders. Scorpionida (scorpions) are reasonably common however the number of species is only 1500-3000 worldwide compared to an estimated 38 000 spider species. You may find pseudoscorpions and some examples of other orders if you look very closely however aranae will dominate your discoveries.

Scientific classification: Arachnids constitute the class Arachnida, in the phylum Arthropoda. The class is divided into 11 orders: the Acari or Acarina (mites and ticks), Amblypygida (tailless whipscorpions), Araneae (spiders), Opiliones (Harvestmen), Palpigradi (palpigrades), Pseudoscorpionida (false scorpions), Ricinulei (ricinuleids), Schizomida (micro whip scorpions), Scorpionida (true scorpions), Solifugae (camel spiders), and Uropygi (whip scorpions).

Arachnida contains 11 existing orders within its group. The most common of this order is Araneae or spiders. There are thought to be about 38 000 species of spiders worldwide.

Araneae
Scorpionida
Pseudoscorpionida
Schizomida
Uropygida
Amblypygida
Solfugae
Acarina
Opilionida
Ricinuleids
Palpigradida