Variasi Sensila pada Antena Ngengat Scirpophaga incertulas Walker (Lepidoptera: Crambidae)

Abstract

Scirpophaga incertulas Walker (Lepidoptera: Crambidae) moth infests paddy, therefore it is known as yellow rice stem borer. The antenna of moth S. incertulas serve as the olfactory organ. The pores in antennal sensilla allow the feromon pass to the inner side of the antenna. The aim of this research was to study the diversity of antennal sensilla from the male and female S. incertulas by using scanning electron microscope (SEM). Goldplating method was applied for the purpose of coating process to increase the slide contrast. The antenna S. incertulas is filiform type and the antenna consists of three main parts, i.e. scape, pedicle, and flagellum. This study found that the S. incertulas male antenna has two types of sensila: trichodea sensilla (having three variations: TrI, TrII, and TrIII types) and bassiconica sensilla with two variations, BaII and BaIII types. Further in female antennal, the result of this study revelaed four types of sensilla: trichodea sensilla (TrI, TrII, and TRIII types), bassiconica sensilla (BaIII type), chaetica sensilla, and three variations of coeloconica sensilla (CoI, CoII, and CoIII types).