Sen-Sung (2003) also showed bioactivity of fourteen essential oils against fourthinstar A. aegypti larvae in 24 h. Essential oils of Vitex trifolia L. and Vitex agnus-castus L.were also evaluated against larvae of Spilosoma oblique (Lepdoptera: Arctiidae), and they were reported to increase larval mortality and adult deformity, and reduce adult eclosion, female fecundity and egg fertility (Shishir et al., 2008).