Though taxonomy of aquatic insects remained static for a long period of time, the last couple of years have seen incredible changes. The following database lists use the older latin names (as you will find in most of the literature) with synonyms appearing in brackets to the right.

Special thanks goes to Prof. William Hilsenhoff at UW Madison and Stan Szczytko of the UW Stevens Point, Pat Randolph at Mayfly Central, Purdue University and Ron Griffiths, PhD. Ontario Ministry of the Environment. All have helped a great deal and have proven to be very patient men.

Common names are used in both the emergence calendars and the database records. The latin tags are used as the cross links for clarity. In taxonomy, FAMILY/SUBFAMILY are always presented in capitals. Names at the Genus level only have the first letter Capitalized and names at the species level use no caps at all. In the database records all are in capitals for the ease of viewing.

Note: EDO and LDO stand for Earliest Date Observed and Latest Date Observed.

Also in the lower right hand corner, the numbers represent the month(s) that the insect is present as an adult, the letter A is the first two weeks of that month and B is the last two weeks of that month.