Paying your dues to the Willi Hennig Society by Credit Card

The secure online transaction page will take you to a safe site at where you can enter the relevant credit card and shipping information (i.e., where you want the journal to be sent).

  • The page will NOT ask you for billing address. But YOU must include the shipping address (ignore that it says “if different from above”) for the transaction to complete.
  • If you wish to snail-mail or fax your membership instead of using this system, please fill out this form

Change of Address

If your mailing address for receipt of Cladistics has changed, please contact Elena Rodríguez Gay via

  • Adrien Perrard showing off his hymenoptera research

  • Adrien Perrard taking photos of wasp wings for geometric morphometric analysis

  • Photos of hymenopteran research from Adrien Perrard

  • Wasps for study from Adrien Perrard

  • Sebastian Kvist examines a leech!