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.
EUCNEMIDAE
4 subfamilies, 8 tribes, 17 genera, 31 species
Subfamily Eucneminae
Tribe Mesogenini
Stethon pectorosus LeConte, 1866: Otto and Karns (2017), Downie and Arnett (1996), BugGuide, MSU-ARC
Subfamily Macraulacinae
Tribe Euryptychini
Euryptychus heterocerus (Say, 1839): Otto and Karns (2017), Downie and Arnett (1996)
Tribe Macraulacini
Deltometopus amoenicornis (Say, 1839): Otto and Karns (2017), Hubbard and Schwarz (1878), Hatch (1924), Downie and Arnett (1996), MSU-ARC
??Dromaeolus badius (Melsheimer, 1845): CHAS:ENT as Fornax badius (Melsheimer); an uncommon sp., need to check ID
Dromaeolus cylindricollis (Say, 1839): Otto and Karns (2017), Hubbard and Schwarz (1878), MSU-ARC
Dromaeolus harringtoni Horn, 1886: Otto (2010), Downie and Arnett (1996), MSU-ARC
?Fornax bicolor (Melsheimer, 1845): Hubbard and Schwarz (1878); Mi record needs confirmation; known from WI & eastern U.S.
Isarthrus calceatus (Say, 1839): Otto and Karns (2017), Hubbard and Schwarz (1878), Hatch (1924), Downie and Arnett (1996)
Isarthrus rufipes (Melsheimer, 1844): Otto and Karns (2017), Downie and Arnett (1996)
Onichodon canadensis (Brown, 1940): Otto and Karns (2017), Downie and Arnett (1996), MSU-ARC
Onichodon downiei Muona, 2000: Otto and Karns (2017)
Onichodon orchesides (Newman, 1838): Otto (2013), Andrews (1923), Downie and Arnett (1996), MSU-ARC
Onichodon rugicollis (Fall, 1928): Otto and Karns (2017), BugGuide
Thambus horni Muona, 2000: Otto and Karns (2017)
Tribe Nematodini
Nematodes atropos (Say, 1839): Ruesink and Parsons (2023), MSU-ARC
Nematodes penetrans (LeConte, 1852): Otto and Karns (2017), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Subfamily Melasinae
Tribe Dirhagini
Dirrhagofarsus ernae Otto, Muona & McClarin, 2014: Otto and Karns (2017), Haack and Ruesink (2020), MSU-ARC
Entomophthalmus rufiolus (LeConte, 1866): Otto and Karns (2017), Downie and Arnett (1996), MSU-ARC
Microrhagus audax Horn, 1886: Otto (2015), Otto and Karns (2017)
Microrhagus carinicollis Otto, 2015: Otto and Karns (2017)
Microrhagus pectinatus LeConte, 1866: Otto (2015), Andrews (1923), Downie and Arnett (1996), MSU-ARC
Microrhagus subsinuatus LeConte, 1852: Otto (2015), MSU-ARC
Microrhagus triangularis (Say, 1823): Otto (2015), Hubbard and Schwarz (1878), MSU-ARC
Rhagomicrus humeralis (Say, 1839): Otto and Karns (2017), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Sarpedon scabrosus Bonvouloir, 1875: Otto and Karns (2017)
Tribe Epiphanini
Epiphanis cornutus (Eschscholtz, 1829): Otto (2011), Downie and Arnett (1996), MSU-ARC
Hylis frontosus (Say, 1836): Otto and Karns (2017), Downie and Arnett (1996)
Hylis terminalis (LeConte, 1866): Otto and Karns (2017), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Tribe Melasini
Isorhipis obliqua (Say, 1839): Otto and Karns (2017), Schwarz (1876), Downie and Arnett (1996), MSU-ARC
Isorhipis ruficornis (Say, 1823): Otto and Karns (2017), Andrews (1923), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Subfamily Pseudomeninae
Tribe Schizophilini
Schizophilus subrufus (Randall, 1838): Otto and Karns (2017)
This family list was last updated: November 7, 2022