With the ID-a-thon underway, I was wondering if people wanted to share their resources for making identifications. I know that iNat staff will be sharing resources throughout the month, but I’d love to see what other people have created or found that is helpful for their groups of organisms. Here …

Can we merge this into the ID a thon unofficial guide on here? It’s better to have everything in one place.

I considered that, but I thought it would get lost in all the discussions about unknowns.

I think this is distinct enough to remain its own thread if OP prefers.

This is a resource for those of us whose ID-a-thon (and daily iNat participation) tends towards specialty IDs: I am an inveterate user and supporter of the Biodiversity Heritage Library ( biodiversitylibrary.org ). For anyone wanting to dive into an ID challenge by examining early literature and pub…

I made this guide for identifying US and Canadian ticktrefoils using parts commonly photographed by iNatters (a combo of distinguishing the two similar genera and identifying the species in the smaller genus): Identifying Hylodesmum and distinguishing it from Desmodium (still working on an accompan…

I made an introductory guide to IDing caterpillars in the eastern US and Canada last year! The example species used are generally extremely common in the Caterpillars of Eastern North America project , but I was mainly trying to help people get to family/subfamily, so it may still be somewhat helpful…

https://keybase.rbg.vic.gov.au/projects (some are test projects) Projects in KeyBase KeyBase currently has 41 projects, together comprising 12108 keys to 53513 items. Project # Keys # Items # Contributors [image] Flora of Australia: vascular plants 2071 21000 26 [image] Flowering plants…

Where is “the announcement” of this

https://www.inaturalist.org/blog/120975-id-a-thon-starts-today This?

Share your ID-a-thon resources!

General

yayemaster December 16, 2025, 2:14pm 3

https://forum.inaturalist.org/t/id-a-thon-unofficial-guide/73649

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Share your ID-a-thon resources!

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