Family Tettigoniidae - Katydids
Katydids North of Mexico
Checklist of species
Key to ID
Songs & sounds of species
Part of the website called:
Singing Insects of North America (http://entnemdept.ufl.edu/walker/buzz/index.htm)
Most of the pages in Singing Insects of North America [SINA] are either taxa pages (for example, species pages, genus pages, subfamily pages, and family pages) or image pages. Image pages display the "regular" version of an image (see Image views), describe the image, and give its source. They are usually accessed from thumbnails of the image on a taxon page. Other types of pages are pictorial key pages, checklist pages (accessed from "List of species" buttons), and general information pages (such as this one).
Orthoptera of Michigan
PDF file, full title: The Orthoptera of Michigan — Biology, Keys, and Descriptions of Grasshoppers, Katydids, and Crickets.
I only see the Acrididae in that link--needs investigation. Color photos of each genus in that volume. Apparently the PDF is only part of the whole publication--too bad.
There is supposed to be a print version, quoting from the web site:
The Orthoptera of Michigan, Biology, keys, and descriptions of grasshoppers, katydids and crickets by Roger Bland. MSU Extension Bulletin E-2815, 220 pp. ISBN - 1-56525-017-6. ordering information is online at:
Orthoptera Species File Online
From the home page:
"The Orthoptera Species File (OSF) is a taxonomic database of the world's orthopteroid insects. It contains full synonymic and taxonomic information for over 25,000 species and genera (all taxa described prior to 1998) of the Tettigonioidea (katydids and haglids),Grylloidea (crickets), Acridomorpha (locusts and grasshoppers: Acridoidea + Eumastacoidea + Trigonopterygoidea + Pneumoroidea + Pamphagoidea), Tetrigoidea (pygmy grasshoppers), and Tridactyloidea (sand crickets), as well as images and sounds for many species. A database for the Gryllacridoidea will become available in the second half of 1999. This site also includes a searchable database of entomologists working on the Orthoptera."