Insects comprise the majority of species on earth, but their population is facing a rapid decline. Many studies have highlighted the impact of excessive use of fertilizers and the effect of continuous change in farm practices on pollinator’s biodiversity. To preserve their biodiversity, 24 \(\,\times \,\) 7 monitoring of flying insects on farmland is essential. Manual observation-based traditional monitoring techniques are ineffective, time-consuming and not applicable for real-time field monitoring. To overcome these limitations, an idea is to develop a network of digital sensors on farmland for effective monitoring of biodiversity. This paper proposes the development of a Digital Entomology (DE) sensor for biodiversity surveillance at a large scale. The sensor monitors the real-time movement of airborne insects along with environmental data and processes it on the cloud for subsequent analysis. The proposed DE sensor is a solar-powered and IoT-enabled processor device suitable for deployment at remote locations. The local management of the sensor is facilitated through the Device Manager Portal (DMP) for accessing device configurations and enabling data downloads via a local Wi-Fi hotspot. The inclusion of over-the-air updates (OTA) capability enables the management and updates of sensors from a location that can be far away from where it is deployed. The proposed DE precisely detects the pollinator’s movement with a high accuracy during testing in farmlands which makes it superior to other existing systems available in the market.