List of arachnids of the Indiana Dunes

Indiana Dunes National Park is a National Park Service unit on the shore of Lake Michigan in Indiana, United States. A BioBlitz took place there on May 15 and 16, 2009. During that time, a list of organisms was compiled which included a preliminary listing of the arachnids of the area.
List of arachnid species.
Acari
Spiders: Araneae