A review on invasive insect pests in India and their predators and parasitoids.
As on date, a total of 32 insect pests have been reported as invasive pests in India, of which 20 species belong to the order Hemiptera, 4 species belong to Lepidoptera, 3 are from Coleoptera, 2 each from Diptera, and Hymenoptera and one Thysanoptera. The invasion of insect pests to India is increasing year by year due to the liberalization of trade and increased movement of humans across the continents. Such kind of biological invasion can be well regarded as biological pollution that causes maximum losses to biodiversity. Invasive species are threats to agricultural biodiversity as well as human and animal health. Though many organizations were involved to curb such invasions, strict implementation of import regulations and international cooperation in trade and commerce, early detection, and taxonomic identification at the entry points will make India safe and secure from such invasive species. Since, these species are non-native and exotic, they have great power of dispersal and adaptation. Owing to the inadequate documentation of all the invasive insect pest species of India, the present review was undertaken.