ok guys, got a bit of a problem, i dont even know what to think here... any idea... these started forming on my flo plant, its towards end of flower, they look like bugs, but are very attached to the stems, and when you pull them off, there is like nothing in them, they dont move or fly dont seem to have anything in them they are not on the buds, but there are a few on the fan leaves, but mostly at the junctions. this plant has them and one of the other plants started to get them. im stumped. any ideas.?