Hi, I took the images posted here via macro junkie. There is some discussion on the photography forum where I initially posted that it could be a proboscis (sorry...spelling) of a butterfly. It's interesting as I just got back from the park where I took the images (yesterday) to try and find her and see if I could get some more close up images. She was on a series of plants that were fairly secluded from the larger bushy areas of the park so I thought maybe she might still be there.
No luck, but I did find two partially eaten moth/butterflys right below where she was yesterday. I took some images and will try to post in a bit. Heads gone on both and while the abdomen was intact the carcass seemed "feather" light; like the insides were gone. I no very little about insects but I've spent a bit of time at the park practicing my macro techniques and have a series of pics where a 3 inch mantid ate every last morsel of some large winged bug.
Do mantids sometimes eat part of a meal, like the head, and drop the rest? Of course other things could've eaten these butterflies as it is in the wild...geckos, spiders, etc...are all present.
Sorry for my ignorance in this area. I just it was weird to see something like this on a mantid. I've taken thousands of photos of these guys at this park and never saw whatever it is around that is around his neck/arm.