Saving effort finding observations
Here's a tip for finding new observations to add to the project without having to sort through observations that are already in the project. For example, let's say that you want to look for parasitized caterpillars of the Northern Apple Sphinx moth.
Start with this link, which provides all of the observations on iNaturalist that are not part of this project (might be slow, since it's currently 34 million observations):
https://www.inaturalist.org/observations?has%5B%5D=photos¬_in_project=bus-passengers-parasitoids-on-or-in-caterpillars&place_id=any&verifiable=any
Then in the Species search box at the top, type Northern Apple Sphinx. The number of qualifying observations drops to 300-something, and this group retains the property of not already being in the project. You might need to click on the "Grid" format to scroll through them if the page defaulted to "Map" or "List" format.