Introduction. The name of each listed species is followed by up to five sources that report the species as occurring in Michigan. Sources in all upper-case letters refer to specific insect collections: MSU-ARC refers to material held by the Michigan State University Arthropod Research Collection (data provided by G. Parsons). All others refer to collection data extracted from the Symbiota Collections of Arthropods Network (SCAN) database online at https://scan-bugs.org/. See the Methods page for a list of abbreviations and associated collections.

Species names preceded by a single '?' are considered probable (for occurring in Michigan) but uncertain records. Those preceded by '??' are considered possible but unlikely to occur in Michigan. Species that are fully accepted as having valid Michigan records are unmarked. Species reported in the literature that we consider to be erroneous Michigan records are in a separate list following the others.

GEOTRUPIDAE

2 subfamilies, 4 tribes, 4 genera, 15 species

Subfamily Bolboceratinae

        Tribe Bolboceratini

Bolbocerosoma bruneri Dawson & McColloch, 1924: Howden (1955), Howden (1984), Downie and Arnett (1996), MSU-ARC

Bolbocerosoma farctum (Fabricius, 1775): Hubbard and Schwarz (1878), MSU-ARC; one 1908 MI specimen from Oakland Co. in MSU coll., also one known OH record; mostly far east & south

         Tribe Eucanthini

Eucanthus lazarus (Fabricius, 1775): Howden (1955), Andrews (1916), Howden (1984), MSU-ARC

         Tribe Odonteini

Odonteus falli Wallis, 1928: Howden (1955), Howden (1984), Downie and Arnett (1996), MSU-ARC

Odonteus filicornis (Say, 1823): Howden (1955), Hubbard and Schwarz (1878), Howden (1984), Downie and Arnett (1996), MSU-ARC

Odonteus liebecki Wallis, 1928: Howden (1955), Howden (1984)

Odonteus simi Wallis, 1928: Howden (1955), Kriska and Young (2002), Howden (1984), Downie and Arnett (1996), MSU-ARC

Odonteus thoracicornis Wallis, 1928: Howden (1955), Kriska and Young (2002), Howden (1984), Downie and Arnett (1996)

Subfamily Geotrupinae

        Tribe Geotrupini

Geotrupes balyi Jekel, 1865: Howden (1955), Hubbard and Schwarz (1878), Howden (1984), Downie and Arnett (1996), MSU-ARC

Geotrupes blackburnii excrementi Say, 1823: Howden (1955), Hubbard and Schwarz (1878), Howden (1984), Downie and Arnett (1996)

Geotrupes egeriei Germar, 1824: Howden (1984), Bezanson and Floate (2019), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

Geotrupes hornii Blanchard, 1888: Howden (1955), Bezanson and Floate (2019), Howden (1984), Downie and Arnett (1996), MSU-ARC

Geotrupes opacus Haldeman, 1853: Howden (1955), Bezanson and Floate (2019), Howden (1984), Downie and Arnett (1996), MSU-ARC

Geotrupes semiopacus Jekel, 1865: Howden (1984), Bezanson and Floate (2019), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

Geotrupes splendidus (Fabricius, 1775): Howden (1955), Hubbard and Schwarz (1878), Howden (1984), Downie and Arnett (1996), MSU-ARC

The following species was reported from Michigan, but we consider it to be adventive, a misidentification or other error:

Subfamily Bolboceratinae

        Tribe Odonteini

Odonteus cornigerus (Melsheimer, 1845): Hubbard and Schwarz (1878); prob. refers to O. falli, O. cornigerus should not be north of the Ohio River in midwest

This family list was last updated: November 11, 2022