Welcome

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. Beyond the many undescribed species, our knowledge of their distributions, biology, behavior, ecology, and phenology remains limited for nearly all ichneumonid taxa. It is therefore crucial to accelerate research to better understand one of Earth's most diverse family of organisms.

Ichneumonids of North America (IoNA) is an online resource dedicated to synthesizing, organizing, and sharing knowledge about ichneumonid biodiversity across North America. this ongoing project aims to foster greater interest in ichneumonids among researchers and the general public by providing accurate identification tools and access to taxonomic information. The website follows the principles of an "e-monograph" or "e-flora/fauna" striving to be a comprehensive, up-to-date, one-stop repository that leverages the interactiveity and customization features of modern web technology. Due to time and resource constraints, however, the project is currently limited to the subfamily Ichneumoninae and is far from its envisioned goal.

IoNA was created in 2022 and is edited and maintained by Brandon Claridge, PhD. Mark Hiner (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.


Guide

Visit the guide page to get started. There you will find subfamily identification resources and links to individual subfamily pages. Ideally, each subfamily page will contain a filterable gallery; basic information about the subfamily's biology, taxonomy, and distribution; a morphology guide; keys to genera and tribes (if applicable); links to generic pages; and major references. The subfamily Ichneumoninae page is the most developed at this time and features 300+ specimens, mostly comprising described species but also many undescribed species and even a few putative new genera. The gallery can be filtered by chromatic and morphological characters, host use, distribution, taxonomy, and sex. All Nearctic genera are represented in the gallery, but only a minority of the species. Additional information, including a tribal key and generic keys to Ichneumonini and Phaeogenini (still in development), can be accessed via the tabs at the top of the page. Links to generic pages are found on the sidebar.

For subfamily identification, please use the subfamily classifier, which will identify a specimen based on an image of the frontal view of the head.

Trogus
Photo by Mark Kluge