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

Calendar
Upcoming Events

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


Family Nepidae - Waterscorpions

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Biologia Centrali-Americana: Insecta, Hemiptera, Heteroptera-Homoptera
By William Lucas Distant et al. (1880-1909)
Bernard Quaritch Limited, London, 1880
Direct link to all plates:

Insecta. Rhynchota. Hemiptera-Heteroptera. Volume I (1880-1893) by William Lucas Distant
Insecta. Rhynchota. Hemiptera-Heteroptera. Volume II (1897-1901) by George Charles Champion

Insecta. Rhynchota. Hemiptera-Homoptera. Volume I (1881-1905) by W. L. Distant and William Weekes Fowler
Insecta. Rhynchota. Hemiptera-Homoptera. Volume II, Part 1 (1894-1909) by W. W. Fowler and T. D. A. Cockerell
Insecta. Rhynchota. Hemiptera-Homoptera. Volume II , Part 2 (1899) by Theodore Dru Alison

The systematics of the Hemiptera
By Forero D.
Rev. Colombiana de Entomol. 34: 1‒21, 2008
Full text
summarizes current advances and understanding of relationships between major lineages, and provides a list of identification aids available online and otherwise

Catalogue of the Hemiptera of American north of Mexico: Except Aphididae, Coccidae and Aleurodidae. Vol. 2.
By Van Duzee, E.P.
University of California Press, Berkeley. xiv + 902 pp., 1917
Full Text

Good source for distribution and literature info.

Includes "Homoptera" too

Van Duzee, E.P. 1917. Catalogue of the Hemiptera of American north of Mexico: excepting the Aphididae, Coccidae and Aleurodidae. Vol. 2. University of California Press, Berkeley. i-xiv + 902 pp.

The Leafhoppers and Planthoppers
By L. R. Nault, J. G. Rodriguez
Wiley-Interscience, 1985

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.

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