There are none !

OK I have been checking Turkey Hill, Valerio and Panera for signs of the "White Fly" and there have not been any, I see some other smaller light yellow duns and spinners and a few Iso's but no white guys. What the heck happened, I will not accept the suggestion that is has been to hot, heck about every year we have low water and high water temp's but this years no flies, how can a population just not appear for a year, yes it has been true that the volume in the past few years has not been what it was at one time and we do expect that any population will have swings in density but to have them just disappear is just a puzzle. Might there be a correlation between the black fly spraying and the demise of the white flies? Why the heck does the State of PA waste money spraying for the black flies when it is a species that does not bite, oh yea it does bother the big guys while they golf at the country club- might that be the reason they keep spraying, oh no! Why take that amount of biomass and kill it rather that have it be food for our fish population, the logic is puzzling of course any thing the State does makes little or no sense. It would do no good to call the PA Fish Comm. because they are more concerned with their own agenda and would not want to bother with a trivial thing like the loss of a population if insects, just another bug lost oh well no big deal, remember the passenger pigeon! Anyone have any ideas?