These grubs, may well be the ’fruit fly’ Joe S. took and I wrote about on Jan 7th 2011 in this blog. Joe mentioned these fruit flies had red eyes. A friend of Joe’s searched the web and came up with “houdini fly” Cacoxenup-inbagator flies.
If you still have these grubs, set them up in a moist warm environment such as a petri dish and see what comes out. What an interesting project for a child who is interested in science. The search continues.