Changes in thoracic temperature induced by exposure to different wavelengths of light at different intensities and for different lengths of time (100 lx, 1000 lx and 1500–43 100 lx). (a): Changes in the thoracic temperature of locusts in response to 100 lx of UV, violet, and orange light for different lengths of time, respectively; (b): Changes in the thoracic temperature of locusts in response to 1000 lx of UV, violet, and orange light for different lengths of time, respectively; (c): Changes in the thoracic temperature of locusts in response to the same light energy (for 1500 lx, 2000 lx, 43100 lx of UV, violet, orange light, respectively) of UV, violet, and orange light for different lengths of time, respectively, and to 10000 lx of orange light for different lengths of time.