Maryland has exceedingly large beetles like the eastern hercules and giant stag beetles, small house pests such as the black carpet, and varied carpet beetle species. The state’s biggest is the eastern hercules, occupying the coastal plains and Piedmont region, easily identified by its large horns (seen in males). Another huge species, the giant stag beetle, was known to inhabit the St Mary’s Somerset and Charles counties. However, the status of its population in Maryland at present remains unrecorded.
Most Common Beetles: Eastern Hercules Beetle, Japanese Beetle, Black Carpet Beetle, Varied Carpet Beetle
Here is the list of beetles found in Maryland arranged in order of the family they belong to.
• Emerald Ash Borer Beetle (Agrilus planipennis)