Abstract: The insects associated with each of Ocimum gratissimum and Ocimum basilicum were revised. Insects found on the plants parts, include Diptera, Hymenoptera, Coleoptera, Orthoptera, Lepidoptera, Dictyoptera, Homoptera and Isoptera. The species richness, diversity index and the similarly index between the paired plant species were also calculated. The results of similarity and diversity indexes were influenced by the weather that fluctuated during the period of study (July to November). The Hymenoptera was the most abundant order on O. gratissimum and O. basilicum, accounting for 43.2 and 50.7%,