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.
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
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.
- Acaenitinae28 genera
- Anomaloninae46 genera
- Banchinae68 genera
- Brachycyrtinae1 genus
- Campopleginae66 genera
- Cremastinae36 genera
- Cryptinae278 genera
- Ctenopelmatinae108 genera
- Diacritinae3 genera
- Diplazontinae23 genera
- Hybrizontinae8 genera
- Ichneumoninae447 genera
- Labeninae13 genera
- Metopiinae27 genera
- Ophioninae32 genera
- Oxytorinae1 genus
- Phygadeuontinae125 genera
- Pimplinae77 genera
- Poemeniinae11 genera
- Rhyssinae8 genera
- Tersilochinae34 genera
- Tryphoninae57 genera
- 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.