The discovery of a population of Antrodiaetus unicolor (Hentz) in Michigan is reported, resulting in the first state record for the mygalomorph family Antrodiaetidae. New county records for another mygalomorph spider, Sphodros niger (Hentz) (Atypidae), including one which represents a significant Michigan range extension, are presented and the occurrence of the genus in Michigan is clarified.
Swanson, Daniel R.
"On the Mygalomorphae (Araneae) of Michigan,"
The Great Lakes Entomologist: Vol. 43
, Article 9.
Available at: https://scholar.valpo.edu/tgle/vol43/iss1/9