Geographic location of the bug: Denton, Texas
Time: 12:05 AM EDT
Your letter to the bugman: This caterpillar is very thin, about 1 inch long. I found it on some Mystic Spires salvia. I would like to know what it will turn into.
How you want your letter signed: M. Hector
Dear M. Hector,
This is an Inchworm or Spanworm in the family Geometridae. We have received images of pink Inchworms in the past, and we have not been able to provide more than a family identification, including this pink Inchworm from Minnesota in 2009. We also located an image of a pink Inchworm on BugGuide that is only identified to the family level. So, the best we can do is provide a family identification at this time. Moths from the family Geometridae often have a very distinct shape including wings with scalloped edges. Though it does not answer your question, you might be amused by this 2012 request to identify a pink Inchworm that garnered a Nasty Reader Award.
Upon further scrutinizing your other images, we cannot even be certain that this is an Inchworm in the family Geometridae. Do you by chance have a lateral view that shows the legs?