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.

Although GBIF places the species didesmus (Say) in the genus Litargus, BugGuide follows Lawrence et al. (2014) and places it in the subgenus Paralitargus of Mycetophagus.  We have followed BugGuide.

MYCETOPHAGIDAE

1 subfamily, 2 tribes, 3 genera, 13 species

Subfamily Mycetophaginae

Tribe Mycetophagini

Litargus balteatus LeConte, 1856: Schwarz (1876), Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC; "Cosmopolitan" per Parsons (1975)

Litargus nebulosus LeConte, 1856: Ruesink and Parsons (2023), MSU-ARC

Litargus sexpunctatus (Say, 1826): Parsons (1975), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC

Litargus tetraspilotus LeConte, 1856: Parsons (1975), Andrews (1916), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

Mycetophagus didesmus (Say, 1826): Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC; sources disagree on generic placement, some have it in Litargus

Mycetophagus flexuosus Say, 1826: Parsons (1975), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC

??Mycetophagus obsoletus (Melsheimer, 1844): Schwarz (1876), Hubbard and Schwarz (1878); MI may be north of its range, but known from IN

Mycetophagus pluripunctatus LeConte, 1856: Parsons (1975), Andrews (1923), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

Mycetophagus praetermissus Parsons, 1975: Parsons (1975), Downie and Arnett (1996)

Mycetophagus punctatus Say, 1826: Parsons (1975), Hatch (1924), Hubbard and Schwarz (1878), MSU-ARC

Mycetophagus quadriguttatus Müller, 1821: Parsons (1975), Andrews (1916), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC

Mycetophagus tenuifasciatus Horn, 1878: Parsons (1975), Hubbard and Schwarz (1878)

Tribe Typhaeini

Typhaea stercorea (Linnaeus, 1758): Ruppel (1977), Husband and Brown (1976), Hatch (1924), Hubbard and Schwarz (1878), MSU-ARC

This family list was last updated: January 27, 2023