County lists

To see individual county species lists, click on the Regional page and look up the respective counties.


A statewide species list is available as a printable all Ohio Dragonfly Checklist (as pdf or Excel) and an All Ohio Damselfly Checklist (as pdf or Excel). These can be used in the field or at home to get excited about finding other species. Think you have found a threatened or endangered species? Let us know!

A good way to figure out where we need to focus our efforts is to see where there have been lots of observations in the past.

The Marietta College web-page has several older maps (see below), which I hope to update before I finish my tenure here.

Records per county

This record map is from 1999. We hope to create new maps with more data once we get our database up and running. Image from Dave McShaffrey using Visual Basic Programming and Data Compilation  by Bob Glotzhober.

Updated sample effort by county map with information as of Dec 2016. This is only a rough estimation of sample effort, but you still see the areas that have had the most collections. This map was made by MaLisa Spring in R using only the OOS data.

Ideally, we will go back out and get more records for the many counties with fewer than 200 observations. As you can see, there is plenty of work left to do.

Species richness by county

This is a different map illustrating species distribution by county, with the large green circles having over 80 species reported as of 1999. Image from Dave McShaffrey using Visual Basic Programming and Data Compilation  by Bob Glotzhober.

Moreover, we want to increase our understanding of the current species richness and distribution across Ohio. We have an estimated 165 species of Dragonflies and Damselflies across all of Ohio, but you can see that we are missing several areas. By focusing on the areas with few reported, we should be able to vastly increase our understanding of Odonata populations.

For a county by county record, click on the tabs for each respective county under the “Odonata Records/Species by County” menu. Also, Odonata Central has similar species lists by county, though they do not seem to be pulling from the same data sources, so it would not hurt to check out both lists.

Updated species richness map by county showing the counties with the highest reported species richness. Map created in R by MaLisa Spring utilizing the OOS data-based specimens (44,000 specimen records) current as of December 2016.

We hope to have more maps and updated visuals as we access the more databased specimens from the past two decades.

Stay tuned!