Uno Roosileht, an entomologist at the Estonian Museum of Nature, discovered a beetle previously unseen in Estonia called Ophonus melletii in southern Estonia. The beetle was collected in early June 2025 from between a gravel road and a field in Koikküla, Valgamaa. Contrary to common beliefs that insects are mainly active in warmer weather, Roosileht found a significant number of insects moving about despite the cold nighttime conditions during his collection outing.

The discovery is significant as the beetle belongs to a group that has been extensively studied in Estonia, making such finds increasingly rare. Roosileht expressed his joy about uncovering new species in the region, highlighting the joys and challenges of entomology in areas where many species are already known. He noted that the discovery adds to the biodiversity of local ecosystems and shows the potential for ongoing exploration in the field of entomology.

Ophonus melletii is a herbivorous beetle, measuring approximately 8-9 millimeters in length, found in open landscapes. The species is distributed across Europe, with known populations in northwestern Poland, southern Sweden, and on islands such as Öland and Gotland, as well as in Denmark and Kaliningrad, indicating that Estonia is part of its broader geographical range.