Family Psephenidae - Water Penny Beetles
New Coleoptera records from New Brunswick, Canada: Dryopidae, Elmidae, Psephenidae, and PtilodactylidaeBy Webster R.P., DeMerchant I.
ZooKeys 179: 67–75, 2012
Review of the American Corylophidae, Cryptophagidae, Tritomidae and Dermestidae, with Other StudiesBy T. L. Casey
New York Entomological Society, 1900
Journal of the New York Entomological Society, 8
(2): 51-172, 1900
Beetles: The Natural History and Diversity of ColeopteraBy Stephen A. Marshall
Firefly Books, 2018
784 pages, profusely illustrated, similar in style/quality to his other insect volumes.
In Beetles: The Natural History and Diversity of Coleoptera, Marshall has again applied his deep knowledge of the insect world. Comprehensive and packed with 27 pages of richly illustrated keys and 4,500 color illustrations, it provides the reader with a colorful and enjoyable introduction to the natural history of a huge group of organisms, along with an overview of the diversity of fascinating families included in the group. The subject of this book is an enormous one, since the beetles, or Coleoptera, include almost 400,000 named species.