Lunging Stance in Drosophila (1 of 2) (VIDEO) California Institute of Technology This video is under embargo. Please login to access this video. Caption Two male flies exhibit the "lunging" behavior that indicates aggression in Drosophila. Lunging consists of a fly rearing up on its hind legs and snapping down with its forelegs on its opponent. Credit Caltech/Liming Wang and Michael Maire Usage Restrictions With credit as given above. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.