anecdotal, having both LED and halogen exterior lights on the home I haven't seen any real difference in bug attraction. I did post a while back about how the recent change over of street lamps to LED in my neighborhood messed up the birds for awhile.

I have a standard "orange" streetlamp between my lot and the next house and two LED on opposite sides of the street in both directions about three hundred feet down from the house. It is now like having a full moon all the time. Apparently when mounting LED replacements they get no hoods or other mechanisms to limit light spread