【目的】 探明丝棉木金星尺蛾Calospilos suspecta幼虫在暗期接受不同波长LED光照对生长发育及繁殖的影响。【方法】 处理组初孵幼虫于暗期分别接受10 h不同波长[红（620-625 nm）、黄（580- 585 nm）、蓝（465-467 nm）和绿色（520-523 nm）]LED光照，光周期分别记为14L∶10R、14L∶10Y、14L∶10B和14L∶10G，对照组在光周期为14L∶10D条件下培养，观测计算化蛹率、羽化率、发育历期、产卵前期和成虫寿命，称量蛹重，统计单雌产卵量。【结果】 （1）不同波长LED光照对丝棉木金星尺蛾化蛹率和羽化率存在显著影响（化蛹率：P=0.000；羽化率：P=0.027），蓝色LED光化蛹率最低（64.00%），绿色LED光羽化率最低（89.55%）；（2）不同波长LED光照均使幼虫期延长，雌幼虫期均长于雄幼虫期；不同波长LED光照使滞育蛹蛹期缩短，黄色LED光使滞育蛹蛹期缩短尤为明显；（3）不同波长LED光照均使蛹重减轻，蓝色LED光下雌雄蛹重最轻，且雌蛹重均显著高于雄蛹重（P<0.05）；（4）不同波长LED光照对丝棉木金星尺蛾产卵前期无显著影响（P=0.468），但与对照组相比，黄色、蓝色和绿色LED光雌雄成虫寿命均显著缩短（P<0.001）；与对照组产卵量[（170.6±46.7）粒]相比，红色LED光使丝棉木金星尺蛾产卵量显著增加[（218.1±52.7）粒]（P<0.001），蓝色LED光使产卵量显著减少[（140.9±33.0）粒]（P<0.001）。【结论】 LED光照对丝棉木金星尺蛾既有近期效应（包括幼虫期、蛹期、化蛹率和蛹重），也有远期效应（包括羽化率、成虫寿命和产卵量），其中蓝色和绿色LED光对其存活、生长发育和繁殖均有抑制作用。

[Aim]  To determine the effect of exposing Calospilos suspecta larvae to LED light of different wavelengths during the dark period on their subsequent growth, development and reproduction. [Methods]  Newly hatched larvae were exposed to LED lights of different wavelengths [red (620-625 nm), yellow (580-585 nm), blue (465-467 nm), and green (520-523 nm)], for 10 h during the dark period, after which their pupation rate, emergence rate, developmental duration, pre-oviposition period and adult longevity, were measured and compared. Pupae were weighed, and the number of eggs laid per female counted. [Results]  (1) Exposure to different wavelengths of LED light had significant effects on the pupation and emergence rates of C. suspecta (Pupation rate: P < 0.001; Eclosion rate: P = 0.027). The blue LED group had the lowest pupation rate (64.00%), and green LED group had the lowest emergence rate (89.55%). (2) Larval duration was prolonged by exposure to LED lights, and female larval duration was longer than male larval duration. Diapause pupal duration was shortened by exposure to LED light, especially yellow LED light. (3) Pupal weight was reduced by exposure to LED light; both female and male pupal weight were least in the blue LED light group, but female pupae were significantly heavier than male pupae (P < 0.05). (4) Exposure to LED light had no significant effect on the pre-oviposition duration of C. suspecta (P = 0.468). However, compared with the control group, the adult longevity of males and females exposed to yellow, blue and green LED light was significantly reduced (P < 0.001). Compared to the control group [(170.6±46.7) grains], exposure to red LED light significantly increased the number of eggs laid per female [(218.1±52.7) grains] (P < 0.001), whereas exposure to blue LED light significantly reduced the number of eggs laid [( 140.9±33.0) grains] (P < 0.001). [Conclusion]  Exposure to LED lights of different wavelengths during the dark period had short-term effects on the larval duration, pupation rate and pupal weight, of C. suspecta. Exposure to LED light also had long-term effects on pupal duration, emergence rate, adult longevity and egg production. Exposure to blue and green LED light inhibited the survival, growth, development and reproduction, of C. suspecta.