About Omophron limbatum (Fabricius, 1777)
Omophron limbatum, commonly called the spangled button beetle, is a species of ground beetle belonging to the Carabidae family. This species has been recorded in Great Britain, Denmark, Sweden, France, Belgium, Netherlands, Germany, Switzerland, Austria, Czechia, Slovakia, Hungary, Poland, Estonia, Latvia, Lithuania, Belarus, Ukraine, Portugal, Spain, Italy, Slovenia, Croatia, Bosnia-Herzegovina, former Yugoslavia, Serbia, North Macedonia, Albania, Greece, Bulgaria, Romania, Moldova, Algeria, Tunisia, Syria, Turkey, Iran, Georgia, Armenia, Azerbaijan, Kazakhstan, Uzbekistan, Kyrgyzstan, Tadzhikistan, Afghanistan, and Russia. Its preferred habitat is the sandy margins of freshwater bodies, particularly exposed sandy riverbanks. Adult individuals of this species grow to between 5 and 6.5 millimeters in length. Their bodies are pale yellow to brown, with distinct metallic green markings. Omophron limbatum is highly sensitive to changes to its natural habitat, including events such as dam construction and vegetation overgrowth. Because of this sensitivity, it is considered a good indicator of environmental disturbance.