Which group of animals is over 90% of the animal life forms on Earth?

for some reason this bugs me.

I think that there's many, many thousands of insects which we have yet to discover

SOOTI, Not even thousands! The exact number of undiscovered insect species is uncertain, but scientists estimate there could be between 2 million and 30 million insect species yet to be identified. Currently, about 1 million insect species have been formally described.

knew this from a TV program, with David Attenborough! thanks Sir David

Adventures Among Ants:. an interesting and hilarious read! Do borrow from library!

normally, the mass/biomass is what is used for this comparison. Number of species is of interest but should be said in question. I know ants make up a lot of terrestrial biomass (previous question here)

Insects are animals?

Jo C, animal, vegetable or mineral...

Wouldn't bacteria be the most abundant life forms on earth?