We found this little creature in a water oak in Blountstown, FL (North FL). I’ve searched the internet with out any luck. It’s more of a greyish white with a long tail, then a spike sort of tail.
The larva of the Drone Fly, Eristalis tenax, is known as the Rat-Tailed Maggot. The tail is actually a breathing aparatus as the Rat-Tailed Maggot is found in sluggish streams and stagnant ponds that are fouled with organic matter.