
Red knee tarantula showing characteristic darkening of the abdomen prior to molt. Click image to enlarge.
Both of the red knee tarantulas I purchased in October stopped eating a little over a week ago, abdomens are darkening, and each has been on the side of its terrarium. It looks likes the second molt should occur soon.
Both tarantulas went from a fairly uniform brown to the color pattern you see above during the first molt. Colors should be brighter and more distinct after each of the next several molts.
Will post images on Things Biological, which posts indirectly to Facebook, after the molt occurs.