>i thought it was adhesive tarsal secretions by workers, and anything that might stick to them...which is probably anything that is or gets into the hive. Thanks. That is the best answer yet, and good reference, too. The reference says it is colourless, though, so what is the stain material? ..."probably anything that is or gets into the hive"? *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html