Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Family Passalidae - Bess Beetles


The Passalidae of the United States
By Jack C. Schuster
The Coleopterists Bulletin, 37(4):302-305, 1983
Full text (PDF)

since 1994 more one species, Odontotaenius floridanus, to add to the list (1)

Odontotaenius floridanus new species (Coleoptera: Passalidae): a second U.S. passalid beetle
By Schuster J.C.
Florida Entomologist 77: 474-478, 1994

Aquatic Hydrophilidae and Hydraenidae of Wisconsin (Coleoptera). I.
By William L. Hilsenhoff
The Great Lakes Entomologist, 1995
Full title: Aquatic Hydrophilidae and Hydraenidae of Wisconsin (Coleoptera). I. Introduction, Key to Genera of Adults, and Distribution, Habitat, Life Cycle, and Identification of Species of Helophorus Fabricius, Hydrochus Leach, and Berosus Leach (Hydrophilidae), and Hydraenidae

Full text

Saprophagous Scarabaeidae (Coleoptera) of North Dakota
By Helgesen R.G., Post R.L.
Schafer-Post Series: North Dakota Insects Publication 7, NDSU. 60 pp., 1967

The phytophagous Scarabaeidae and Troginae (Coleoptera) of North Dakota
By Lago P.K., Post R.L., Oseto C.Y.
Schafer-Post Series: North Dakota Insects Publication 12, NDSU. 131 pp., 1979

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

Full text

Guide d’identification des Scarabées du Québec (Coleoptera : Scarabaeoidea)
By Martin Hardy
Entomofaune du Quebec inc, 2014
To order online: http://entomofaune.qc.ca/Volumes.html

In french BUT all keys are both in french and english. Well done!

Flight activity and relative abundance of phytophagous scarabs (Coleoptera: Scarabaeoidea) from two locations in Florida
By Buss, E.A.
Florida Entomologist 89: 32-40., 2006
Online here