Fig. 1
From: Behavioral changes in the brown planthopper, Nilaparvata lugens, mediated by melatonin
I Infrared counting device for locomotion counting. a, rice seedlings; b, infrared grating sensor; c quartz glass cover; d, wet cotton ball; e, tested insects; f, infrared rays. II Observation device. a, LED lights; b, observation room; c, infrared cameras (two in total); d, quartz glass cover; e, rice seedlings (the Figure not show all seedlings); f, tested planthoppers (the Figure not show all planthoppers); g, wet cotton; h: monitor display. For better view, the scales of d, e, f and g were enlarged