> Vitamin C is common, it seems to (all?) artificial insect diets.
> Tang(tm) was  -- I think I can tell now -- the 'secret ingredient' in
> Andy's bee diet.

To go further with this, It seems to me that it may be the citric acid
that is involved in insect diets.

Tang contains a fair amount of citric acid and less ascorbic, I think.
FWIW, citric acid can be bought at any wine making store.

At any rate, if you are really interested, search with Google for
variations of the words artificial insect and diet, plus whatever you
fancy

Here are a few hits to get you started.

http://insectscience.org/1.7/
http://www.insectscience.org/1.7/ref/table1.html

allen
www.honeybeeworld.com