Prague's historic center was first included in the UNESCO list of World Heritage Sites in 1992.
Patellapis sigiriella is a species of bees in the genus Patellapis , of the family Halictidae .. Halictidae. Halictidae. Patellapis. Patellapis. It is endemic to Sri Lanka , specimen was first found from Sigiriya area of Matale District .. Sri Lanka. Sri Lanka. Sigiriya. Sigiriya. Matale District. Matale District