There are 2 species of Dynastes found in the U.S., one in the Southeast and the other in the Southwest.
Unicorn Beetle (Dynastes tityus) Top: Large male collected in Dover, TN Aug 2000 Middle: Small male collected in
Nashville, TN Aug 2000 Bottom: Male and female collected in Atlanta, GA Jul 2001
Grant's Rhinoceros Beetle (Dynastes granti) Collected in Arizona Aug 2000 Top: A male Center: A male (viewed
from above) Bottom: A night's catch of beetles
Immature stages of rhinoceros beetles