Tuberfly

Another zoophytic critter for the painting, possibly in the same family as the mothroom.

Really this would be more of a rootfly, botanically, but I couldn't resist the dyslexic pun. Photoshop.

Radiciform

Continuing the cross-section theme: this devious fellow snuggles quietly down into the loam & remains perfectly still until a root borer happens along-- then suddenly snaps to life & gobbles him up!

Mysterious are the ways of nature. If you think such extreme camouflage is unlikely, take a look at this real-life amazingness.

Also, mysterious are the ways of Google. An image search for radiciform turns up the most peculiarly random assortment of stuff. ?????

Edit: I must say this IF prompt has brought out some of the coolest entries I've seen in a while! Definitely worth perusing if you haven't already.