Investigating the Enigmatic and Invasive Entomofaunal Diversity of Temperate Viticulture: First Record of the Nearctic buffalo treehopper Stictocephala bisonia (Kopp & Yonke) and a Previously Undocumented Altica Species (Altica aenescens) (Weise, 1888) from India

The increasing spread of invasive phytophagous pests in temperate fruit-growing regions of the Indian subcontinent poses a significant threat to agricultural sustainability, driven by globalization, climate change, and expanding international trade. To investigate this emerging challenge, a study was conducted in May 2024 to identify previously undocumented insect pests affecting grapevines cultivated under temperate climatic conditions in India. Weekly entomological surveys were carried out in the Srinagar and Ganderbal districts of Jammu and Kashmir, focusing on three grape cultivars: Sahebi and Hussaini (native to Kashmir) and Thompson Seedless (a widely grown commercial variety). Insect specimens were collected using traps and vials, followed by detailed morphological identification using a stereo zoom microscope (Olympus SZX16) equipped with a high-resolution video camera for both insects and molecular analysis giving cytochrome c oxidase subunit I (COX1) gene, partial cds isolate for the flea beetle. This research led to the discovery of two previously unreported pests in Indian viticulture. The first, Stictocephala bisonia (Kopp & Yonke), a species of treehopper, has been observed in India for the first time. The expansion of the geographical distribution is mostly likely via Central Europe into Asia, following temperate and subtropical corridors. Its ability to spread to new regions, coupled with the potential to transmit phytoplasmas that affect fruit trees, amplifies its invasive potential. Additionally, an unreported flea beetle species, Altica aenescens, from the genus Altica, was identified, further expanding knowledge of grapevine pests in the region. These findings emphasize the urgent need for continuous entomological monitoring and pest documentation, as changing climatic conditions and global trade continue to influence the geographic distribution and adaptability of insect species. Early detection and proactive management of such pests are crucial for developing effective control strategies, minimizing economic losses, and ensuring the long-term sustainability of temperate grape cultivation in India.