Literally, parasitism by theft. A form of feeding where one animal takes prey that another has caught, killed, or otherwise prepared it for instance as a stored food provision.
Links: http://en.wikiped...parasitism; Sivinski, J., S. Marshall & E. Petersson, 1999. Kleptoparasitism and phoresy in the Diptera. - Florida Entomologist 82: 179-197 (download).
Tried to attach an image to a forum post. jpg, 32kB, 72dpi, no blanks, ... File name is correctly displayed, but when I click "Preview Thread" it just vanishes. Help!