Originally Posted by
good finish
having bugs on the wings must impact the laminar flow and thus reduce the lift produced requiring more throttle - maybe though its a negligible amount?
It depends on how the wing was designed: if it was designed as a laminar flow wing, then bugs will have a measurable impact on its performance.
A conventional wing, on the other hand, does not rely on any significant portion of the profile having a laminar boundary layer, so any bugs, rivets, dents etc. won't make that much of a difference.