And I think this isn't the one North American species, Urodus parvula, because the cocoon of that one is made of golden silk, but it's otherwise very similar. (Actually, this one looks like it has a golden tinge in some places...) It's a shame to frass such a nice cocoon--someone in the Southeast needs to find one of these!

Wood, a big tree

on and

While the outer mesh is superficially similar, that looks to me like a moth pupa inside. I've seen a photo of a moth in the family Urodidae with a similar rectangular mesh cocoon, so that would be my guess... the thread it's attached to supports my hunch--in this family, according to Wikipedia: "The pupa is contained in an open-mesh cocoon, which can be bright orange in colour, which is sometimes suspended on a very long thread below a leaf."

Thanks a lot Charley, more people like you would really pleasant to find here, whose do not mind where the request are from..
Your help is really important for those that aren´t so lucky for living in a place that really cares about study such these simple and fantastic part of our planet
Thanks so much..

I think a lot of people are happy to help, but just don't have the resources to fully identify what you find. I, for one, like seeing your photos, and I always feel bad when they get moved to 'frass.'

I'm going to move this cocoon photo to the Guide, because it does look a lot like the North American species, and will help other people to identify it. I think it makes sense to keep, at least until someone gets a photo of the North American one.

I believe that in the past images of species that were photographed in Mexico (but occasionally occur in the US) were added to the guide until Texas examples were obtained. Then they were frassed. It seems like a very good addition as a placeholder.