I read the book "Never Home Alone" [1] a year or two ago, which is about all the different microbes and insects and such that are in the environment around us.
One of the things the author mentioned a few times is to never assume that something you find around your house has been cataloged or studied before. There are relatively few scientists who study such things.
One of the anecdotes was that someone the author knew discovered two or three new species of insect just by going out into his backyard and looking around.
[1] https://www.goodreads.com/book/show/39088985-never-home-alon...