Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Interactive image map to choose major taxa Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

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National Moth Week was July 19-27, and the Summer 2025 gathering in Louisiana, July 19-27

Photos of insects and people from the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2024

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27


Species Erioptera venusta

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Manual of Nearctic Diptera Volume 1
By Varies for each chapter; edited by J.F. McAlpine, B.V. Petersen, G.E. Shewell, H.J. Teskey, J.R. Vockeroth, D.M. Wood.
Research Branch Agriculture Canada, 1981
This volume includes: introduction; chapters on morphological terms for adults and larva; keys to family for adults and larvae; keys to genera for all non-Schizophoran flies, e.g. "Nematocera", "Orthorrhapha," and Empidoidea.

An easier search to find family info on the PDF, courtesy of V. Belov:

To jump to family chapters in the PDF files, enter the following
numbers into the pdf viewer page # box (volume indicated before the
page #)
Acartophthalmidae 2:195 • Acroceridae 1:585 • Agromyzidae

A Catalog of the Diptera of America North of Mexico
By Alan Stone, et al.
United States Department of Agriculture, 1965
Nomenclature is dated, of course. One nice feature is range information.

The Flies of Western North America
By Frank R. Cole and Evert I. Schlinger
University of California Press, 1969
Although out of print, and in some respects out of date, I have consulted this tome numerous times where I had nothing else available. It has been a very valuable resource.
Since this book is out of print, the Amazon link doesn't seem to work. See here for internet availability: 1.

A Checklist of the Cave Fauna of Texas. V. Additional Records of Insecta.
By Reddell, J.R.
The Texas journal of science 22(1): 47-65., 1970
Full Text - BHL

Reddell, J.R. (1970). A Checklist of the Cave Fauna of Texas. V. Additional Records of Insecta. The Texas journal of science 22(1): 47-65.

ABSTRACT

Seventy-three species of insect are reported for the first time from caves in Texas; new records and bibliographic citations are included for 93 species previously reported from Texas caves. Unpublished records are included for the following groups: Collembola, Hemiptera, Homoptera, Odonata, Blattidae, Gryllacrididae, Psocoptera, Dermaptera, Lepidoptera, Formicidae, Siphonaptera, Diptera, and Coleoptera. Of special significance are new records for species of the carabid genus Rhadine.

Entomological correspondence of Thaddeus William Harris, M.D.
By Scudder, S.H. (Ed.)
Boston Society of Natural History, Boston., 1869
Full Text - BHL

Scudder, S.H. (Ed.) (1869). Entomological correspondence of Thaddeus William Harris, M.D. Edited by Samuel H. Scudder. Boston Society of Natural History, Boston.

Entomology for beginners: for the use of young folks, fruit-growers, farmers, and gardeners
By A.S. Packard
Henry Holt and Company, 1888
This little volume is an interesting glimpse into the science of entomology in the late 1800s, but today it is most useful as a source of public domain figures. Available online at Biodiversity Heritage Library

Facts and theories concerning the insect head
By R.E. Snodgrass
Smithsonian Miscellaneous Collections, 142, (1), 1–61, 1960
Detailed information and illustrations of insect head structures, but with somewhat dated terminology; available online and indicated as not in copyright in the United States.

Notes on the Neuroptera and Mecoptera of Kansas, with keys to the identification of species
By smith, Roger C.
Journal of the Kansas Entomological Society, 7: 120-144, 1934

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