Borror, Donald J.; Triplehorn, Charles A.; Johnson, Norman F (1989) (Print (HB)). Fort Worth, Texas: Saunders College Pub. pp. 800. ISBN 0-03-025397-7 Matthew L. Gimmel (15 September 2008). . Louisiana State Arthropod Museum. (besøkt: 24. juni 2010) Silfverberg, H. 1992. (Liste over Nordens biller). Helsinki.