Singing Insects of North America (SINA)
Thomas J. Walker
founder of SINA
founder of SINA
Teresa Marie Yawn
editor, webmaster
editor, webmaster
The primary goal of this website is to help users identify all species of crickets and katydids from America north of Mexico. The males of most species in these two taxa make loud, persistent calls that attract sexually ready, conspecific females. Because the songs are loud and species specific they are usually an easy means of identifying the caller. They also facilitate field and laboratory studies of many sorts.
Secondary goals of this site are to attract amateur and professional biologists to the study of singing insects and to provide them helpful information and access to relevant literature.
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| Checklist of Crickets | Checklist of Katydids |
A revision of the shield-backed katydid genus Aglaothorax (Cole et al. 2025) was published in Zootaxa in July 2025. Five Aglaothorax species already on SINA were redescribed. Twelve new species have been added to the genus, eight subspecies were promoted to species rank, and three subspecies were reclassified as junior subjective synonyms. All Aglaothorax species are now on SINA and their pages are under construction. All species are on the katydid checklist with links to their respective species pages. [tmy 18 January 2026]
The map pages for SINA's species are being updated to include higher resolution maps, summaries of distribution, and lists of states and counties for the United States and regions and localities for Canada. The SINA Map Updates page lists which map pages are completed and which are in progress. [tmy 1 May 2026]