I have noticed new species in my own environment arrive with a bang (large populations at first) and then gradually diminish with passing years. 

Tracheal mites- kicked our butts (large hive losses) and gradually becoming less of a problem.

Mexican bean beetles(look like lady bugs)- they were so thick that they filled the windows between the panes and infiltrated my house. 

Hive beetles- seem to be less of a problem now. Not as many as when they first infiltrated our hives and honey house. 

I can think of more examples and I'm sure most of you can. I mention it as the thought occurred to me reading my Bee-l digest this morning in re: to hive beetles. It was Howard from Hawaii who wrote:

<<I'm hearing numbers of 100 sterile to 1 non-sterile. In Hawaii, 
the hives are already loaded with SHB - one hive I have I trapped 1,000 
and estimated at least another 600 or so in the hive.>>

I wonder when we'll say the same of Varroa mites? Maybe it will take a couple more generations of beekeepers. 

Btw, in the Florida panhandle, we are having the warmest winter I can remember. 

Kirk Jones

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