Several suggestions:
1) This bee-like creature may actually be a termite. Termites have no relation to the bee family but I can understand why you may be confused. Not all termites can fly but they do have wings, and that mound they go into is their home.
2) Yeah, because I don't think bees can get that big. The largest stinging insect is the Japanese Giant Hornet and they live in Asia inside paper nests.
3) There are several species of solitary wasps, such as the Great Black Wasp, which can be 2 inches in length, dig burrows in the ground when laying eggs, and each burrow, as with ants, will have a small mound of dirt outside that the insect has expelled from the tunnel.
Could the original questioner give more detail about the insect's coloration, and the size of the mound, and where it is (continent, forest, savannah, beach, back yard, etc)?
cicada killer wasp
nymph
The hackberry wooly aphid is a small insect that looks like dandelion fluff. They tend to float around in the air near hackberry.
Some species of crane flies.
The insect that looks like wood is called the Phasmatodea. The more common name for this insect is a walking stick.
A groundhog or woodchuck looks like a squirrel and lives underground.
The Asian cockroach flies and looks like a German cockroach. The Asian cockroach is attracted to lights. It can fly up to 120 feet.
its a tiger
whats the comment
It looks!
Because it looks like a stick!
a moth
The praying mantis is an unusually large insect, about 3 inches long as an adult, and rather thin and elongated; it looks somewhat like a larger version of a grasshopper.
The praying mantis is an unusually large insect, about 3 inches long as an adult, and rather thin and elongated; it looks somewhat like a larger version of a grasshopper.
It is a type of insect that looks like a cow.
nymph
The Hale Telescope at Mount Palomar has an aperture of 200 inches.
The hackberry wooly aphid is a small insect that looks like dandelion fluff. They tend to float around in the air near hackberry.