Abstract
To investigate the phototaxis and photophobism behaviors and the gender differences of S. punctaria in response to different light spectra, 18 lights with wavelengths 370-600 nm were used, and effects of green spectrum (520-525 nm) and yellow spectrum (590-595
nm) on the oviposition, hatching rate, eclosion rate and longevity of S. punctaria (indoor fresh leaf-bred for 5 generations) were studied. The results showed that under the light of 370-665 nm, both female and male adults of S. punctaria had the phototropic and photoevasive
behaviors (showed multi peaks), with females tended to orange and violet lights (395-400 nm); males tended to amber and violet light (370-375 nm). After 520-525 nm and 590-595 nm light irradiation at night, the number of oviposition decreased by 55.70% and 44% (significant
difference); and the hatching rate decreased by 13.33% and 9%, respectively. Both the above two lights have effects on the pre-oviposition and average oviposition period, and have significant effect on the longevity of female adults, while no significant effect on male adults; and both the
longevity of female and male adults was prolonged with the increased population density. This study is expected to provide a reference for the research and biocontrol of S. punctaria.