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Artifactual wing patterns in photographs

Photographing a tortricid moth using the light of a nearby incandescent lamp after having taken pictures initially using the lightflash of my camera, I was surprised how differently the wing patterns of the moth were reproduced (see the images here and here). Looking at these pictures I must conclude that attempts to match images of these tortricid moths with those posted in BugGuide and by MPG are meaningful only with flash illuminated individuals. Is there any discussion of this somewhere?
P.S. Perhaps I should have posted this comment in the Photography section.

Correct
Many moths have very reflective scales and some scales on an individual can be much more reflective that others on the same individual. So a diffuse light source or one from a large angle from the direction of your lens can have a big impact versus flash. Even ring flash can be different that single or twin. I always try to get a shot from a couple angles. Thanks for bringing this up.

Here's another tip. Try to notice whether the side of a moth that you are shooting is the side with a fully exposed wing or the side with the wing that is partially folded under. I try to remember but usually forget.

 
Yes, it depends on moth and angle
Thank you, Steve, for your comment and suggestions. We all are familiar with the light reflection by some scales that may cause moths in photographs to appear more or less densely speckled white, but I was (and still am, actually) not sure how to take effects on the overall appearance of the wing patterns into consideration when trying to match moth photos with posted images.

 
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I've settled on using a ring flash. I think twin flash units and natural light make the best images in terms of aesthetics, but I think ID is easier with ring because the light is more diffuse and even. Pinned images always use flash and, when done well, is very diffuse.

Sorry for not giving the right answer the first time. I'm not sure if I'm any closer.

 
No dissatisfaction implied!
Please, there are no apologies needed for your initial response to my post. Anyway, thank you for your additional explanations and advice. I am simply trying to come to terms with the dramatic effects of the light regime on the appearance of moths like certain tortricids. Granted, I have difficulties with many of them under any condition, but with regard to my Argyrotaenia photos, had I only relied on the one obtained with diffuse incandescent light, I may not have gotten as far as the floridana-tabulana alternative on the basis of comparisons with the images in MPG that obviously were all taken with flashed light. What I should have written in my reply is that I now know that, when trying to match photographic images, I have to be aware of possible effects of the light regime not just on speckling and color hues, but also on the wing pattern.

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