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Re: [OM] Screen critter

Subject: Re: [OM] Screen critter
From: Dean Hansen <hanse112@xxxxxxx>
Date: Wed, 13 Jun 2018 11:50:03 -0500
Don Holbrook had posted a shot of an unknown moth, <
http://zone-10.com/tope2/main.php?g2_itemId=22864>, and, on a hunch, I
suggested to Don off-list to put "Pterophoridae", or plume moth, into
Google Images.  Don agreed with my hunch on an ID.  Going a step farther,
try "Alucitidae", or many-plumed moth, in Google Images. I could hardly
believe what I was seeing the first time I tried to spread one out on a
pinning board.  Maybe Jim N. could tell us a bit about the aerodynamics of
a wing structure like these guys have.  Getting down to the ultra-small
insects flying around, put "Mymaridae" into Google Images.  Some of these
guys are so tiny that flying, to them, is like a human trying to swim in a
pool of ping-pong balls.  Or something like that.  A few species of
mymarids have wings that look not like a wing but like a canoe paddle with
fine hairs along the margins.  Again, molecules of O2 or N2 in air look
quite a bit different to something 2 mm long than do these molecules look
to a 747 at 600 mph.  (I never got to even the basic understanding of
Reynold's Numbers.  Sorry, Jim.)
Dean
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