Pollination is an essential process for the success of sexual reproduction in cross-breeding plants that is intended by different methods, including air, water and animals. The probability of entomophilous pollination depends upon the diversity of insects. A total of 18 insect species were reported for Tagetes erecta (Mexican Marigold) from nine families and two orders (Hymenoptera and Diptera). Hymenoptera was found to be the most abundant order followed by Diptera. Apidae was found to be the most abundant family followed by Scoliidae, Muscidae, Megachilidae, Colletidae, Syrphidae, Halictidae, Calliphoridae and Vespidae. The Apis dorsata bee in the study area was revealed as a major pollinator. Apis dorsata was reported as the most effective pollinator carrying loose pollen grains with the highest pollination index (123402.60) sticking to the body 17235. The Simpson index was estimated 0.2859, indicating high diversity in the study area and the Simpson diversity index was estimated to be 0.7141, indicating that when randomly selected from a sample; there is a more than 71 per cent probability of the two distinct species. The Shannon index was estimated at 1.525, which reflects the dominance of a sample group.