Texas Beetle Information

Return to Texas Entomology - Compiled by Mike Quinn

Grant's Hercules Beetle

Dynastes granti Horn, 1870

Family Scarabaeidae, Subfamily Dynastinae, Tribe Dynastini

cf. D. tytius

(male, females are sans horns)

Madera Canyon, Coronado NF, Santa Cruz Co., AZ
November 06, 2004 (M Stangeland & K Davis)

D. granti County Records for Arizona and New Mexico

NM County Record Source: INRAM Biodiversity searchable database

Range: Arizona, New Mexico, northwestern Mexico.

Adult Activity: August to November.

Similar Species: Six species of Dynastes are found in the New World, three of which are found in the U.S. and northern Mexico. 

Dynastes granti Horn, 1870 - Arizona, New Mexico
Dynastes tityus
(Linnaeus, 1758) - Eastern North America
Dynastes hyllus
Chevrolat, 1843 - Occurs as far north as Tamaulipas, Mexico


Grants' Rhinoceros Beetle Care Sheet - Jon Fouskaris & Orin McMonigle
Rearing of Dynastes granti - Elytra and Antenna 


Grant's Rhinoceros Beetles Mating - Bob Jensen
Males of Grant's Rhino Fighting - Bob Jensen
Grant's Rhino Beetle in all it's glory - Bob Jensen 
Bob Jensen's Dynastes granti collection - Clark Thompson
Videos - InsectaCulture.com 

Etymology: Dynastes granti Horn, 1870

dyn, -am, -amo, -ast (G). Be able; power, energy

Bibliography: George Henry Horn (1840-1897) - University of Nebraska-Lincoln State Museum


Arnett, R.H., Jr., M.C. Thomas, P.E. Skelley & J.H. Frank. (editors). 2002. American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press LLC, Boca Raton, FL. xiv + 861 pp.

Borror, D.J. 1960. Dictionary of Word Roots and Combining Forms. National Press Books, Palo Alto. v + 134 pp.

Endrödi, S. 1985. The Dynastinae of the World. Dr. W. Junk Publisher, Dordrecht. 800 pp., 46 plates.

Glaser, J.D. 1976. The biology of Dynastes tityus (Linn.) in Maryland (Coleoptera: Scarabaeidae). Coleopterists Bulletin, 30(2): 133-138.

Lachaume, G. 1985. Dynastini 1: Dynastes-Megasoma-Golofa. Les Coléoptères du Monde, vol. 5. Sciences Nat, Venette, France. 85 pp., 29 plates.

McMonigle, O. 2001. The Complete Guide to Rearing Grant's Rhinoceros Beetle. Elytra and Antenna, Brunswick Hills, OH. 37 pp. 

Ritcher, P.O. 1966. White Grubs and Their Allies, a Study of North American Scarabaeoid Larvae. Oregon State University Monograph Series No. 4: 1-219.

Saylor, L.W. 1948. Synoptic revision of the United States scarab beetles of the subfamily Dynastinae, No. 4: Tribe Oryctini (Part). Journal of the Washington Academy of Sciences, 38(5): 176-183.

08 Oct 2007  © Mike Quinn / Texas Entomology / Texas Beetles / Texas Beetle Photos /