They are typically copper brown in color with a dark abdomen. That said ... from mild to severe. A fire ant hill is a ...

“The abdomen and cephalothorax of spiders are closely attached, while in ants the equivalent of these ... “And there are many other lesser structures that need to be modified in spiders ...

The previously unknown species, now named Sirenobethylus charybdis, had a Venus flytrap-like structure on its abdomen that could have allowed it to trap other insects, the researchers reported ...