Perennial crops influence ecosystems and insect dynamics. This study was carried out to evaluate the influence of rubber orchards age on insect’s biodiversity in Tonkpi region of Côte d’Ivoire. Insects were collected in 4 classes of rubber orchards (class 1:] 0, 5] years), class 2:] 5, 10] years and class 3:] 10, 15] years) in comparison to forest. Four plots (10 m x 100 m) per rubber orchards class and in forests were sampled. A total of 10 families belonging to 4 orders (Hymenoptera, Coleoptera, Lepidoptera and Orthoptera) were collected. The results showed that the forest has the highest number of families and insects harvested compared to rubber orchards. The number of families recorded were low in old orchards of class 3. This increased progressively with age to its maximum in young orchards of class 1. The Shannon Index was higher in the forest (H ’= 2.015) and was less than 2 in the different rubber orchards. However, equitability (E) were higher in the rubber orchards classes 2 and 3 than the rubber orchards class 1 and those of the forest. The negative effects of rubber orchards on insect’s diversity increased progressively with their age. Thus, rubber tree fields are less effective in maintaining insect biodiversity. We recommended that the combination of other plants to rubber crops for the insect diversity conservation.