No longer available
The link you followed is to a site that has been taken down.
All the identification information from that site has been moved to the Dragonfly ID app.
Dragonfly ID app for IOS and Android
Dragonfly ID app features identification, status and distribution information for odonates in North America. It also has bar charts built from the OdonataCentral database of sightings, recent sightings submitted to OdonataCentral displayed on maps, crowd-sourced text, images and more.