White-lined Sphinx migration

[Monarchrst at aol.com]

Since it is getting close to "Moth"er's Day, I thought I would let those that 
are interested know that there is a pretty big migration(?) of white-lined 
sphinx Hyles lineata going on down here in the lower desert.  Cannot be sure 
that they are migrating since one cannot get direction of flights at night, 
but the numbers are quite large.  I am getting between 300 and 500 adults per 
night to a 15 watt black light, which certainly catches one's attention.

These numbers have been running about a week now, a little after the painted 
lady migration.  Probably both population increases have been due to the 
increased abundance of desert annuals in the areas that received spring 
showers around here.

Ian Watkinson, Yuma, Arizona
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