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.

STAPHYLINIDAE - SCAPHIDIINAE

4 tribes, 6 genera, 20 species

Tribe Cypariini

??Cyparium concolor (Fabricius, 1801): Andrews (1923), Schwarz (1876), Hubbard and Schwarz (1878) as Baeocera concolor Fab.; a SE sp.; should not be in MI; IL,IN in D&A - seUS in GBIF

Tribe Scaphidiini

Scaphidium piceum Melsheimer, 1844: Hubbard and Schwarz (1878), Ruesink and Parsons (2024), MSU-ARC

Scaphidium quadriguttatum Say, 1823: Hubbard and Schwarz (1878), Ruesink and Parsons (2024), MSU-ARC

Tribe Scaphiini

Scaphium castanipes Kirby: Hubbard and Schwarz (1878), Downie and Arnett (1996)

Tribe Scaphisomatini

Baeocera apicalis LeConte, 1860: Cornell (1967), Casey (1900), Hubbard and Schwarz (1878), Downie and Arnett (1996)

Baeocera charybda (Cornell, 1967): Löbl (2018)

Baeocera congener Casey, 1893: Löbl (2018), Hatch (1925), MSU-ARC

Baeocera discolor Casey, 1900: Löbl (2018), Casey (1900), Leng (1920)

Baeocera youngi (Cornell, 1967): Cornell (1967), Downie and Arnett (1996)

Baeocera nana Casey, 1893: Löbl (2018), Casey (1900), Leng (1920), MSU-ARC

Baeocera picea Casey, 1893: Löbl (2018), Cornell (1967), Casey (1900), Leng (1920), Downie and Arnett (1996)

Scaphisoma convexum Say, 1825: Leng (1920), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

Scaphisoma flavescens (Casey, 1900): Casey (1900), Leng (1920), Downie and Arnett (1996)

?Scaphisoma lacustre (Casey, 1900): Downie and Arnett (1996); location "Lake Superior", which could be Canada

Scaphisoma pusillum LeConte, 1860: Peck and Thomas (1998), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

Scaphisoma rubens Casey, 1893: Ruesink and Parsons (2024), MSU-ARC

Scaphisoma suturale LeConte, 1860: Hubbard and Schwarz (1878), Ruesink and Parsons (2024), MSU-ARC

Scaphisoma terminatum Melsheimer, 1844: Peck and Thomas (1998), Hatch (1925), Hubbard and Schwarz (1878)

Toxidium compressum Zimmermann, 1869: Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

??Toxidium gammaroides LeConte, 1860: Schwarz (1876), Hubbard and Schwarz (1878); an eastern sp. known as far west as Toronto

This family list was last updated: April 21, 2023