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

Suborder Polyphaga - Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles


Species of Cryptophagus Herbst, 1792, belonging to the "dentatus group" (Coleoptera: Cryptophagidae) from the western Palearctic
By Otero, J.C. and C. Johnson
Entomologica Fennica 24: 81-93, 2013
Full title: "Species of Cryptophagus Herbst, 1792, belonging to the "dentatus group" (Coleoptera: Cryptophagidae) from the western Palearctic region"


Treats a couple of species that also occur in the Nearctic.

A revision of the North American Cryptophagus Herbst (Coleoptera: Cryptophagidae)
By Woodroffe, G.E. & Coombs C.W.
Miscellaneous Publications of the Entomological Society of America 2: 179–211, 1961

Systematic revision of Central American Calligrapha Chevrolat of the subgenus Erythrographa subgen. nov. (Coleoptera:...
By Gómez-Zurita J.
Zootaxa 4531: 1-58, 2018
Full title: Systematic revision of Central American Calligrapha Chevrolat of the subgenus Erythrographa subgen. nov. (Coleoptera: Chrysomelidae, Chrysomelinae)
Full text

Introduced leaf beetles of the Maritime Provinces, 8: Gastrophysa polygoni (Linnaeus) (Coleoptera: Chrysomelidae)
By L. LeSage & C.G. Majka
Zootaxa 2047: 48-62, 2009

A revision of Prespelea Park (Staphylinidae, Pselaphinae)
By Caterino M.S., Vásquez-Vélez L.M.
ZooKeys 685: 105-130, 2017

Distribution and Biology of Aglyptinus laevis (LeConte) in the United States and Canada (Leiodidae; Leiodinae; Scotocryptini)
By S.B. Peck
The Coleopterists Bulletin, 58 (3): 373-377 , 2004

A New Species of Acmaeodera from Arizona (Coleoptera)
By J.N. Knull
The Ohio Journal of Science, 1961
Full Text

Description of Acmaeoderopsis hassayampae

The Coccinellidae (Coleoptera) of America North of Mexico
By Robert D. Gordon
Journal of the New York Entomological Society, Vol. 93, No. 1, 1985
912 pages

Slightly dated with regard to status of imported species (1985 - Harmonia axyridis establishment listed as questionable - oh, were it true!), but still a great comprehensive work covering all of lower 48, with detailed line drawings, keys to all species, and distribution maps.

Full text on-line