Chuck, the priamus on the wall, was it behind UV blocking glass/plastic?

I ask because this question was asked on a facebook group and someone said they do turn blue just from the sun’s UV in nature. They even had “examples.” I was dubious. Thought I would ask you guys!

We have had past discussions about UV turning green birdwings blue under artificial conditions. I am curious, does this ever happen in the wild, even slightly? If a green birdwing is a couple of weeks old, does it get a bit blue?

I don’t think rutulus and eurymedon routinely hybridize.

Also, I agree with Adam. See here
https://journals.flvc.org/holarctic/art ... 357/109718

Among those who raise silkmoths, it seems to be generally known that if a female does not mate, she will lay sterile eggs after a few days. My question is, do female butterflies do the same? Or do they just hold on to their eggs until they die if they are unable to find a mate?

If the blue is a structural colour (often the case), it should not fade with age alone, no?

On the left, second down, isn’t that S. aphrodite? I thought cybele didn’t have the FW basal dark spot.

You are awesome Chuck. Keep up the good work. Tiger swallowtails are having a terrible season here in Kingston.

This is hilariously sad.

I seem to recall a paper concluding that the green vs brown pupae thing was based on the texture of the pupation surface. Not sure if this is universal.

Also, E. marcellus, Battus philenor, and Battus polydamas all have brown and green pupae. I have had the pleasure of raising all 3 species.

I have noticed the same in my specimens. The scales will have some variation in structure which affects what wavelengths we see. Same is true for Papilio troilus. They range from blue-green to light blue.

Looks like they are attracted to the same pile of poop. Can I buy this poop or the animal that produced it? Lol

https://www.pinterest.ca/pin/butterflie ... 115342116/

Similar to this.

Ha, I envy people living in the west! I would love some euryalus or P. multicaudata or P. indra.

Kevin, where abouts do you live? Does cecropia occur in your area?

Spicebush is uncommon, but I have it in my yard. I also have a bunch of pawpaw and pipevine. A man can dream haha. I have raised cecropias on lilac before and they did well. However, I had to get lilac from elsewhere. I have a huge spicebush in my yard and it would be way more convenient if that was...

Hi all. Anyone know if cecropia larvae will accept spicebush (Lindera benzoin)? Searched the internet with no help. I know cecropia larvae can feed on sassafras. So I am wondering if they accept other Lauraceae like spicebush.

Yes, definitely.

Are these still considered subsp plexippus?

I haven’t lived long enough to see trends. However, reading about people’s collecting experience from about a century ago, a decline is indisputable. A major factor seems to be Compsilura.