1 23 Journal of Insect Behavior ISSN 0892-7553 Volume 26 Number 5 J Insect Behav (2013) 26:623-633 DOI 10.1007/s10905-013-9378-4 Plant Size-dependent Escaping Behavior of Gregarious Nymphs of the Desert Locust, Schistocerca gregaria Koutaro Ould Maeno, Cyril Piou, Sidi Ould Ely, Mohamed Abdallahi Ould Babah, Benjamin Pélissié, Sid’Ahmed Ould Mohamed, et al.