Megathymus ursus

Megathymus ursus, known generally as the ursus giant skipper or ursine giant skipper, is a species of giant skipper in the butterfly family Hesperiidae. It is found in Central America and North America.

The MONA or Hodges number for Megathymus ursus is 4151.

Subspecies
These three subspecies belong to the species Megathymus ursus:
 * Megathymus ursus deserti R. Wielgus, J. Wielgus & D. Wielgus, 1972
 * Megathymus ursus ursus Poling, 1902
 * Megathymus ursus violae D. Stallings & Turner, 1956