Simplify the following text for a Grade 8 native English-speaking person.
Original: Daboia is a monotypic genus created for a venomous viper species , D. russelii , which is found in Asia throughout the Indian subcontinent , much of Southeast Asia , southern China and Taiwan .
Simplified: Daboia is a monotypic genus of venomous Old World viper . The single species , D. russelii , is found in Asia throughout the Indian subcontinent , much of Southeast Asia , southern China and Taiwan .