Introduction

Ichneumonids are a fascinating group of parasitoid wasps, with over 25,000 described species of an estimated total of 100,000. In North America (north of Mexico), more than 5,000 species have been described, with likely several thousand more awaiting discovery. Like many hyperdiverse groups, identification resources and other information about ichneumonids are severely lacking relative to their diversity which hinders further research.

Ichneumonids of North America (IoNA) is an online resource dedicated to synthesizing, organizing, and sharing knowledge about ichneumonid biodiversity. The website follows the principles of an "e-monograph" or "e-flora/fauna", striving to be a comprehensive, up-to-date, one-stop repository.

A Trogus female resting on a leaf
Trogus. Photo by Mark Kluge.

Identify a specimen

Visit the guide to get started. There you will find subfamily identification resources and links to individual subfamily pages.

The subfamily classifier will identify a specimen based on an image of the frontal view of the head.

Look up a name

The catalog gives the nomenclature, distribution, and host records for 26,344 species in 1,615 genera worldwide.

IoNA Notes

Notes on the taxonomy, biology and imaging of Nearctic ichneumonid wasps.

Most Wanted: Conocalama galbinata
8 November 2026

All notes

Subfamilies

Coverage is uneven. The Ichneumoninae page is the most developed at this time, and all of its Nearctic genera are represented in the gallery.

  1. Acaenitinae28 genera
  2. Anomaloninae46 genera
  3. Banchinae68 genera
  4. Brachycyrtinae1 genus
  5. Campopleginae66 genera
  6. Cremastinae36 genera
  7. Cryptinae278 genera
  8. Ctenopelmatinae108 genera
  9. Diacritinae3 genera
  10. Diplazontinae23 genera
  11. Hybrizontinae8 genera
  12. Ichneumoninae447 genera
  13. Labeninae13 genera
  14. Metopiinae27 genera
  15. Ophioninae32 genera
  16. Oxytorinae1 genus
  17. Phygadeuontinae125 genera
  18. Pimplinae77 genera
  19. Poemeniinae11 genera
  20. Rhyssinae8 genera
  21. Tersilochinae34 genera
  22. Tryphoninae57 genera
  23. Xoridinae7 genera

IoNA was created in 2022 and is edited and maintained by Brandon Claridge, Ph.D. Mark Hiner-Weir M.S. (associated with the University of Minnesota Insect Collection) is also a major contributor. Please reach out if you are interested in ichneumonid research or contributing to IoNA.