Colour fading

[lmark]

I have a question regarding colour fading of beetles. I have a nice Chrysina resplendens that I want to place on my wall in a frame, but I don't want it to fade due to sunlight exposure. Do beetles with structural colours like Chrysina fade as well?

Thanks,
Mark

[jamesd]

For fading pigments: insectnet.proboards.com/index.cgiaction=display&board=coleoptera&thread=1616&page=1

As for structural colours I cannot help you, sorry.

[timsbugs]

I've had a Chrysina display hanging on my wall for almost 20 years and they are as resplendent as the day I put them in there.

None of my displays are in direct sunlight.

Tim

[lmark]

Thanks for the replies, I found some articles in which there are other exmaples, so I will go with the framing. It is interesting that the photonic structures causing these colours are used in femtosecond lasers.

Thanks,
Mark

[wingedwishes]

There is also museum glass which not only prevents glare but also blocks UV light. I get it at a Home Depot frame shop. I think that most iridescence is caused by structural rather than pigmentational qualities and so do not readily fade.

[lordpandarus]

I know butterflies don't really fade if you don't expose them to direct sunlight or very bright lighting . But few butterfly types like Vanessa, Heliconius and Cethosia fade naturally even with no lights

Normal room lighting should do no harm. I have a few 25 watt bulbs in my butterfly room and only turn on the ceiling light when I want to really look at them

[wollastoni]

Worst are Acraeidae that fades really easily. So beautiful and intense in the wild, and somewhat boring in collection...