Looks like you might have a bacterial infection on that tree. What does it smell like? Mold, or a sulphur putrid smell? Or something else?

The maggots were probably attracted to the rotting stuff.

chuckr30 the smell is sweet, I went back to the trees the black spots are at ground level but i dug up the soil right there on one tree and the tree almost sounds hollow right above the spot, the liquid gets a sudsy look when left alone and it just keeps coming back. This year we did have an above average rainfall in the early part of the summer.
thanks for your response, did not think about a bacterial infection

Perhaps slime flux, also known as bacterial wetwood. The creatures would be secondary.