Become a member

Membership fees have been waived until and including 2023. Please e-mail Secretary Torsten Dikow ( to join the Willi Hennig Society during this time.

Paying dues by credit card

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Change of address for subscribers of Cladistics

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!