The common grass yellow exhibits seasonal polyphenism. The lepidopteran has a darker summer morph, triggered by a long day exceeding 13 hours in duration, while the shorter diurnal period of 12 hours or less induces a fairer morph in the post-monsoon period
- Dimensions : 3748 x 2499 pixels
- Device : Canon EOS 200D
- Focal length : 250.00 mm
- Aperture : f/5.6
- ISO : 100
- Flash : No Flash
- Exposure Time : 1/160 s
