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.

A well know common species goes under two different names in the literature and in collections: Telephanus atricapillus Erichson and T. velox (Haldeman). Thomas (1993) states that although atricapillus is the older name, it is treated as a nomen nudum by most authors because Erichson did not explicitly describe the species when he described the genus Telephanus, although he did propose the name atricapillus. BugGuide uses the name atricapillus whereas GBIF and itis.gov use velox. We choose to follow GBIF in this case.

SILVANIDAE

2 subfamilies, 2 tribes, 8 genera, 14 species

Subfamily Brontinae

Tribe Brontini

Dendrophagus cygnaei Mannerheim, 1846: Hubbard and Schwarz (1878), Ruesink and Parsons (2024), MSU-ARC

Uleiota debilis (LeConte, 1854): Ruesink and Parsons (2024), MSU-ARC

Uleiota dubia (Fabricius, 1801): Andrews (1923), Hubbard and Schwarz (1878), Townsend (1893), Ruesink and Parsons (2024), MSU-ARC

Tribe Telephanini

Telephanus velox (Haldeman, 1846): Clampitt et al. (1996), Haack and Ruesink (2020), Hubbard and Schwarz (1878), MSU-ARC; many sources follow Thomas and Nearns (2008) and use the name T. atricapillus Erichson for this species, but GBIF has it as we do.

Subfamily Silvaninae

Ahasverus advena (Waltl, 1832): Ruppel (1977), Hubbard and Schwarz (1878), BugGuide, MSU-ARC

??Ahasverus rectus (LeConte, 1854): Hubbard and Schwarz (1878) as Silvanus rectus Lec. in the Cryptophagidae; may survive only indoors this far north; MI record needs confirmation

Cathartosilvanus imbellis (LeConte, 1854): Halstead (1973), Thomas (1993), Hatch (1924), Downie and Arnett (1996), MSU-ARC

?Nausibius clavicornis (Kugelann, 1794): Hubbard and Schwarz (1878); probably in the state but MI record needs confirmation

Nausibius major Zimmermann, 1869: Halstead (1980), Downie and Arnett (1996)

Oryzaephilus mercator (Fauvel, 1889): Ruesink and Parsons (2023), BugGuide, MSU-ARC

Oryzaephilus surinamensis (Linnaeus, 1758): Ruppel (1977), Hubbard and Schwarz (1878), MSU-ARC

Silvanus bidentatus (Fabricius, 1792): Andrews (1923), Hubbard and Schwarz (1878), Ruesink and Parsons (2024), MSU-ARC

Silvanus muticus Sharp, 1899: Halstead (1973), Thomas (1993), Haack and Ruesink (2020), MSU-ARC

Silvanus planatus Germar, 1824: Halstead (1973), Hatch (1924), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

This family list was last updated: March 3, 2023