Thank you for your interest in joining the International Society of Arachnology, the premier international scientific society for the study of arachnids (exclusive of mites). To become a member you need to fill out the form below! For inquiries regarding membership, please contact



Create a new user-profile


Annual dues are $20.00 USD for regular members, $15.00 USD for students or retired individuals, and $50.00 USD for institutions. The ISA also offers also a lifetime membership for $500 USD. Payments can be made through PayPal using the right button or after logging in as a member. Clicking the PayPal button will also enable you to pay by credit card (i.e. you do not need to have a PayPal account).

Membership (please select)

Student Research Fund

The ISA is committed to supporting student research and the next generation of scientists. In 2017, the society initiated a Student Research Fund. We must raise $5,000 US in order to establish this fund. Once this goal has been reached, we will post instructions for applicants. We hope to reach this goal by the end of 2017.

Donors to the new ISA Student Research Fund who contribute $5,000 US or more will have the privilege of naming the grant program and will receive a copy of Richard Bradley’s Common Spiders of North America and a copy of the 2nd edition of Spiders of North America: an identification manual. Individuals who contribute $500 - $4,999 US will receive a copy of one or the other book (each book retails for $95 US).