Here is an image of a small area of wing from the same Lacewing that I posted a head shot of the other day.
There are two wings, one on top of the other in this image.
The field of view is about 2.5mm wide.
Does anyone know why some insects have so many hairs in places you might not expect there to be hairs. Logic would say that hairs on a wing would not be good for aerodynamics, but not many insects are aerodynamic anyway.
Do insects get some added benefit from these hairs? Maybe they give some additional lift by increasing the surface tension between the wing and the air. A bit like a feather falling more slowly than a brick. If that was true, it would mean the insect had to expend less energy to stay in the air than if they had no hairs.

Bye for now.