Ectinus aterrimus is a member within the family Elateridae which is commonly called Click Beetles or Snapping Beetles.
Their body can produce a "click" which can bounce the beetle into the air.
Clicking is mainly used to avoid predation, although it is also useful when the beetle is on its back and needs to right itself.

Kunë-Vain-Tale Nature Park, Lezhë County, Albania, 25 April 2023