Cousin Beetle is a term used to refer to two different species of beetles: the ELM Beetle (3 letters) and the SCARAB Beetle (6 letters). The ELM Beetle is a small, black beetle that feeds on ELM trees and is found in Europe and North America. The SCARAB Beetle is a large, black beetle found in tropical and subtropical regions around the world. Both species are considered pests due to their destructive feeding habits.