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In order to explore the mechanism underlying chemosensation in the tea looper, Scopula subpunctaria (Lepidoptera: Geometridae), the types, morphology, quantity and distribution of sensilla on the antenna were observed by scanning electron microscopy. The results showed that females and males antennae were filiform, bipectinate, respectively, which be divided into three segments, scape, pedical and flagellum that consisted numerous individual flagellomeres, respectively. There were eight kinds and twelve types of sensilla on the antennae, including 4 subtypes of sensilla trichodae, 2 subtypes of sensilla basiconica, sensilla chaetica, Böhm bristles, sensilla squamiformia, sensilla auricillica, sensilla coeloconica, and sensilla styloconica. No differences were found about the morphology, abundance, and distribution of most sensillum. However, the distributions and abundances of ST III, sensilla coeloconica and sensilla styloconica dimensions showed significant sexual dimorphism between male and female adults. In addition, the possible functions of sensilla were analyzed and discussed according to their morphology, distribution, and the previously reported sensilla function. These results could help to understand the chemical communication of S. subpunctaria and their host, and provide a scientific basis for the development of a novel biological control strategy of S. subpunctaria. [ABSTRACT FROM AUTHOR]

The effects of illumination of four LED wavelengths (440~450 nm, 460~465 nm, 600~605 nm and 490~495 nm) on egg quantity, oviposition rate and adult longevity of Ectropis grisescens Warren were investigated in laboratory. The results showed that the total egg quantity, oviposition rate and adult longevity were all affected. The egg number every female adult of E. grisescens Warren was reduced 37.36%, 26.17%, 41.88% and 35.11% contrast to the control. The average oviposition rate reduced 16.61%, 11.44%, 11.81% and 8.86% respectively with the supply of four wave lengths at night. Meanwhile, the pre-oviposition period and oviposition period were affected by the four illumination deals of wave lengths. The longevity of male and female adult was decreased, and the male adult was longer than that of female adult under each treatment of E. grisescens Warren. The eclosion rate of four deals were affected respectively. The purpose was screen out the best spectrum possible by study the effect of spectral treatment on biological habit of E. grisescens Warren. The results provide a scientific basis for the use of phototaxis to the integrated management of E. grisescens Warren. [ABSTRACT FROM AUTHOR]