The Dynastine Scarab Beetles of the USA and Canada (Coleoptera: Scarabaeidae: Dynastinae)By Brett C. Ratcliffe & Ronald D. Cave
University of Nebraska State Museum, Vol 30, 298 pp, 2017
The 61 species and two subspecies of dynastine scarab beetles that occur in the United States of America (including Guam) and Canada are reviewed. Discussions of historical collecting, people, climate, vegetation, and habitats are presented. Keys to all tribes, genera, and species in the study area are given. Descriptions, recorded geographic localities and temporal distributions, diagnoses, notes on natural history, illustrations, and distribution maps are provided for all species. Also included are synopses of the higher-level taxa of the subfamily in the region, a glossary, and a species checklist.
Collagenus dasysternus ... with a key to the New World genera of PentodontiniBy Brett Ratcliffe and Martin Hardy
The Coleopterists Bulletin, Vol. 59, pp.143-150, 2005
Brett Ratcliffe and Martin Hardy, Collagenus dasysternus
, a new genus and species of Dynastinae from eastern Venezuela with a key to the New World genera of Pentodontini (Coleoptera: Scarabaeidae: Dynastinae), The Coleopterists Bulletin 59
(1): 143-150, 2005.
From BG's Pentodontini Info
tab, "One error noticed; couplet 11- range of genus Aphonus should be 'United States east of the Rocky Mountains'".
The species of Scarabaeidae (Coleoptera) associated with sugarcane in south FloridaBy R.D. Gordon and D.M. Anderson
The Florida Entomologist, 64 (1): 119-138 , 1981
"Those species of Scarabaeidae known to be associated with sugarcane in the Lake Okeechobee area of Florida are discussed and delineated. The species are: Phyllophaga latifrons (LeConte), Anomala marginata (F.), Cyclocephala parallela Casey, Dyscinetus morator (F.), Ligyrus subtropicus (Blatchley), and Euphoria sepulchralis (F.). Descriptions and illustrations of the larvae of all these species are presented as well as descriptions and illustrations of the adults of all species except Euphoria sepulchralis (F.). A key to the south Florida species of the genus Cyclocephala is also included."
The Scarab Beetles of FloridaBy Robert Woodruff
Florida Department of Agriculture and Consumer Services, 1973
Full title: Arthropods of Florida and Neighboring Land Areas. Volume 8. The Scarab Beetles of Florida (Coleoptera: Scarabaeidae). Part I. The Laparosticti (Subfamilies: Scarabaeinae, Aphodiinae, Hybosorinae, Ochodaeinae, Geotrupinae, Acanthocerinae). Part II covers May Beetles (Phyllophaga).
Has black-and-white photos. Apparently out of print, but still available from some suppliers--see comments. Also available on-line:
Link updated 7 February 2012--thanks for the comments!
The Scarabaeoid beetles of San Diego County, California. Part I. Introduction...By McPeak R.H., Oberbauer T.A.
Proceedings of the San Diego Society of Natural History 40: 1-24, 2008
Full title: The Scarabaeoid beetles of San Diego County, California. Part I. Introduction and diagnosis of families Glaresidae, Trogidae, Pleocomidae, Geotrupidae, Ochodaeidae, Hybosoridae, and Glaphyridae