Found indoors, may have wandered in from outside.
Under loose bark of Paperbark Maple (Acer griseum) on branch about 3" in diameter (rough estimate, did not measure). 4 individuals here, at least one other group located elsewhere on the same tree. Body length maybe 2mm (rough estimate by sight).
The prey spider
Need to reshoot to get better details but does this seem like a mouse spider ?