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 - MISCELLANEOUS SMALLER SUBFAMILIES
12 subfamilies, 8 tribes, 35 genera, 93 species
Subfamily Euaesthetinae
Tribe Euaesthetini
Edaphus americanus Puthz, 1974: Herman (2001), Downie and Arnett (1996)
?Edaphus nitidus Motschulsky, 1857: Hubbard and Schwarz (1878), SI:NMNH; we assume H&S had authority wrong; if not, we don't know what this is
Euaesthetus albertae Puthz, 1998: Puthz (2014), Herman (2001), Casey (1884), Downie and Arnett (1996); syn. brevipennis described from Detroit by Casey (1884); BugGuide still uses brevipennis (in 2023)
Euaesthetus americanus Erichson, 1840: Herman (2001), Hubbard and Schwarz (1878), Leng (1920), Downie and Arnett (1996), MSU-ARC
Euaesthetus ganglbaueri Bernhauer, 1928: Herman (2001), Downie and Arnett (1996)
Euaesthetus iripennis Casey, 1884: Puthz (2014), Downie and Arnett (1996)
Euaesthetus mundulus Casey, 1884: Puthz (2014)
Euaesthetus pugetensis Hatch, 1957: Puthz (2014)
Euaesthetus suteri Puthz, 2014: Puthz (2014)
Subfamily Habrocerinae
Tribe Habrocerini
?Habrocerus capillaricornis (Gravenhorst, 1806): KU:SEMC; Wayne Co, Redford Township, Bell Creek Park
Habrocerus magnus LeConte, 1878: LeConte (1878), Wolcott (1909), Hubbard and Schwarz (1878), Downie and Arnett (1996); holotype from Isle Royale, MI
Habrocerus schwarzi Horn, 1877: Herman (2001), Hubbard and Schwarz (1878), Leng (1920), Downie and Arnett (1996), MSU-ARC
Subfamily Micropeplinae
Arrhenopeplus tesserula (Curtis, 1828): Herman (2001), Campbell (1984a), Hubbard and Schwarz (1878), Downie and Arnett (1996); most American sources (incl. BugGuide) do not use Arrhenopeplus and instead place this sp. in Micropeplus
Micropeplus browni Campbell, 1968: Herman (2001), Campbell (1984a), Downie and Arnett (1996)
Micropeplus laticollis Mäklin, 1853: Herman (2001), Campbell (1984a), Downie and Arnett (1996), MSU-ARC
Micropeplus sculptus LeConte, 1863: Herman (2001), Campbell (1984a), Downie and Arnett (1996)
Subfamily Mycetoporinae
Bobitobus cinctus (Gravenhorst, 1802): Herman (2001), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Bobitobus fungicola Campbell, 1982: Herman (2001), Campbell (1982a), Downie and Arnett (1996), MSU-ARC
Bobitobus kelleyi (Malkin, 1944): Herman (2001), Campbell (1982a), Downie and Arnett (1996), MSU-ARC
??Bobitobus obsoletus (Say, 1832): Hubbard and Schwarz (1878) as Bolitobius obsoletus Say
Bolitobius cingulatus Mannerheim, 1830: Wolcott (1909), Hubbard and Schwarz (1878), Ruesink and Parsons (2023b), MSU-ARC
Bryophacis smetanai Campbell, 1993: Herman (2001), Campbell (1993), Downie and Arnett (1996)
Bryoporus rufescens LeConte, 1863: Herman (2001), Leng (1920), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Bryoporus testaceus LeConte, 1863: Herman (2001), Campbell (1993), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Carphacis effrenatus Herman, 2001: Herman (2001), Andrews (1923), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Carphacis nepigonensis (Bernhauer, 1912): Herman (2001), Downie and Arnett (1996), MSU-ARC
Carphasis dimidiatus (Erichson, 1839): Hubbard and Schwarz (1878), Ruesink and Parsons (2023b), MSU-ARC
Ischnosoma fimbriatum Campbell, 1991: Herman (2001), Campbell (1991), Downie and Arnett (1996); GBIF has this as a jr. syn. of I. longicorne Mäklin, BugGuide has fimbriatum as valid
Ischnosoma flavicolle (LeConte, 1863): Herman (2001), Schwarz (1876), Leng (1920), MSU-ARC
Ischnosoma pictum (Horn, 1877): Herman (2001), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Ischnosoma splendidum (Gravenhorst, 1806): Herman (2001), Downie and Arnett (1996), MSU-ARC
Ischnosoma virginicum (Bernhauer, 1917): Herman (2001), Campbell (1991), Downie and Arnett (1996), MSU-ARC
Lordithon anticus (Horn, 1877): Herman (2001), Campbell (1982a), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Lordithon appalachianus Campbell, 1982: Herman (2001), Campbell (1982a), Downie and Arnett (1996)
Lordithon exoletus (Erichson, 1839): Herman (2001), Townsend (1889), Leng (1920)
Lordithon facilis (Casey, 1885): Herman (2001), Campbell (1982a), Evans (2014), MSU-ARC
Lordithon niger (Gravenhorst, 1802): Herman (2001), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Lordithon thoracicus (Fabricius, 1777): Herman (2001), Andrews (1923), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Mycetoporus americanus Erichson, 1839: Herman (2001), Andrews (1923), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Mycetoporus consors LeConte, 1863: Herman (2001), Leng (1920), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Mycetoporus inquisitus Casey, 1885: Herman (2001), Campbell (1991), Downie and Arnett (1996), MSU-ARC
Mycetoporus lepidus (Gravenhorst, 1806): Herman (2001), Schwarz (1876), Hubbard and Schwarz (1878)
Mycetoporus lucidulus LeConte, 1863: Herman (2001), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Mycetoporus rufohumeralis Campbell, 1991: Herman (2001), Campbell (1991), Downie and Arnett (1996)
Mycetoporus rugosus Hatch, 1957: Herman (2001), Campbell (1991); GBIF has this as a jr. syn. of Mycetoporus montanus Luze, 1901
Subfamily Olisthaerinae
Olisthaerus megacephalus (Zetterstedt, 1828): Wolcott (1909), Hubbard and Schwarz (1878), LeConte (1850); Syn. laticeps described from St. Ignace by LeConte (1850)
Olisthaerus substriatus (Paykull, 1790): Wolcott (1909), Hubbard and Schwarz (1878), LeConte (1850); syn. nitidus described from Eagle Harbor by LeConte (1850)
Subfamily Osoriinae
Tribe Eleusinini
Eleusis pallida (LeConte, 1863): Herman (2001), Schwarz (1876), Hubbard and Schwarz (1878), MSU-ARC
Tribe Thoracophorini
Lispinodes undescribed species: Newton et al. (2001); recognized as a distinct species, but as of 2020 it remains undescribed as far as we know
Prolibia laevicauda (LeConte, 1866): Herman (2001), Downie and Arnett (1996)
Thoracophorus costalis (Erichson, 1840): Herman (2001), Hubbard and Schwarz (1878), MSU-ARC
Subfamily Oxyporinae
Oxyporus femoralis femoralis Gravenhorst, 1802: Herman (2001), Campbell (1969), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Oxyporus lateralis Gravenhorst, 1802: Herman (2001), Campbell (1969), Hanley (1993), Hubbard and Schwarz (1878), MSU-ARC; placed in genus Pseudoxyporus by GBIF
Oxyporus lepidus LeConte, 1877: Campbell (1969), Hanley (1993), Herman (2001), Downie and Arnett (1996)
Oxyporus major Gravenhorst, 1806: Hanley (1993), MSU-ARC
Oxyporus occipitalis Fauvel, 1864: Campbell (1969), Hanley (1993), Herman (2001), Downie and Arnett (1996), MSU-ARC; placed in genus Pseudoxyporus by GBIF
Oxyporus quinquemaculatus LeConte, 1863: Campbell (1969), Hanley (1993), Herman (2001), Andrews (1923), Downie and Arnett (1996), MSU-ARC; placed in genus Pseudoxyporus by GBIF
Oxyporus rufipennis LeConte, 1863: Campbell (1969), Hubbard and Schwarz (1878), Herman (2001), Andrews (1923), Downie and Arnett (1996), MSU-ARC
Oxyporus stygicus Say, 1831: Campbell (1969), Hubbard and Schwarz (1878), Herman (2001), Downie and Arnett (1996), MSU-ARC
Oxyporus vittatus vittatus Gravenhorst, 1802: Campbell (1969), Hanley (1993), Hubbard and Schwarz (1878), Herman (2001), MSU-ARC
Subfamily Phloeocharinae
Charhyphus picipennis (LeConte, 1863): Herman (2001), Hubbard and Schwarz (1878)
Subfamily Piestinae
Siagonium americanum (Melsheimer, 1844): Herman (2001), Hubbard and Schwarz (1878)
Siagonium punctatum (LeConte, 1866): Herman (2001)
Subfamily Proteininae
Tribe Proteinini
Megarthrus americanus Sachse, 1852: Cuccodoro and Löbl (1996), Andrews (1923)
Megarthrus excisus LeConte, 1863: Cuccodoro and Löbl (1996), Andrews (1923), Hubbard and Schwarz (1878)
Megarthrus pecki Cuccodoro and Löbl, 1996: Cuccodoro and Löbl (1996), Herman (2001)
Proteinus atomarius Erichson, 1840: Herman (2001), Ruesink and Parsons (2023b), MSU-ARC; a European sp.; Herman (2001) was citing Fauvel (1878) who considered parvulus a synonym, and Fauvel's info came from Schwarz's record for parvulus from Detroit, so Herman (2001) is not a valid report for atomarius.
Proteinus parvulus LeConte, 1863: Hubbard and Schwarz (1878); described from Lake Superior and known from across Canada, Hubbard and Schwarz (1878) report it from Detroit
Subfamily Pseudopsinae
Pseudopsis subulata Herman, 1975: Herman (2001), Downie and Arnett (1996)
Subfamily Xantholininae
Tribe Diochini
Diochus schaumi Kraatz, 1860: Herman (2001), Brunke et al. (2011), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Tribe Othiini
Atrecus americanus (Casey, 1906): Herman (2001), Smetana (1982), Downie and Arnett (1996), MSU-ARC
Tribe Xantholinini
Gyrohypnus campbelli Smetana, 1982: Herman (2001), Smetana (1982), Downie and Arnett (1996)
Gyrohypnus fracticornis (O.F. Müller, 1776): Herman (2001), Smetana (1982), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Hypnogyra gularis (LeConte, 1880): Herman (2001), Smetana (1982), Casey (1906), Hatch (1925), Downie and Arnett (1996)
Hypnogyra micans (Casey, 1906): Herman (2001), Smetana (1990)
Leptacinus batychrus (Gyllenhal, 1827): Herman (2001), Smetana (1982), Downie and Arnett (1996)
Leptacinus intermedius Donisthorpe, 1936: Ruesink and Parsons (2023b), MSU-ARC
Leptacinus pusillus (Stephens, 1833): Herman (2001), Smetana (1982), Downie and Arnett (1996), MSU-ARC
Lithocharodes longicollis (LeConte, 1863): Herman (2001), Smetana (1982), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Neohypnus beckeri Smetana, 1982: Smetana (1982), Downie and Arnett (1996), MSU-ARC
Neohypnus emmesus (Gravenhorst, 1802): Herman (2001), Smetana (1982), Andrews (1916), Hubbard and Schwarz (1878), MSU-ARC
Neohypnus hamatus (Say, 1830): Herman (2001), Smetana (1982), Hatch (1925), Downie and Arnett (1996), MSU-ARC
Neohypnus lineatus (Wendeler, 1924): Herman (2001), Smetana (1982), MSU-ARC
Neohypnus melanops (Casey, 1906): Herman (2001), Smetana (1982)
Neohypnus monstrosus Smetana, 1982: Herman (2001), Smetana (1982), MSU-ARC
Neohypnus obscurus (Erichson, 1839): Herman (2001), Smetana (1982), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Neohypnus pusillus (Sasche, 1852): Herman (2001), Smetana (1982), Downie and Arnett (1996)
Nudobius cephalus (Say, 1830): Herman (2001), Smetana (1982), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Nudobius singularis Smetana, 1982: Herman (2001), Smetana (1982), Downie and Arnett (1996)
Phacophallus pallidipennis (Motschulsky, 1858): Ruesink and Parsons (2023b), MSU-ARC; slight chance the MSU specimens could be P. parumpunctatus instead
Stenistoderus rubripennis (LeConte, 1880): Herman (2001), Smetana (1982), Downie and Arnett (1996), MSU-ARC
Stictolinus flavipes (LeConte, 1863): Herman (2001), Smetana (1982), Downie and Arnett (1996), MSU-ARC
Xestolinus abdominalis Casey, 1906: Herman (2001), Smetana (1982), Downie and Arnett (1996), MSU-ARC
The following species were also reported from Michigan, but we consider them to be adventive, misidentifications or other errors:
Subfamily Mycetoporinae
Lordithon antennatus Campbell, 1982: KU:SEMC (Washtenaw Co.); a Mexican sp., should not be in MI
Lordithon trinotatus (Erichson, 1839): Hatch (1925), Hubbard and Schwarz (1878) as Bolitobius trinotatus Er.; a Eursian sp. that prob. does not occur in N.A.
Mycetoporus humidus (Say, 1832): Hatch (1925); humidus is a nomen dubium (Campbell 1991)
Subfamily Pseudopsinae
Pseudopsis columbica Fauvel, 1865: Leng (1920); a South American sp., cannot be in MI
Pseudopsis sulcata Newman, 1834: Hubbard and Schwarz (1878), Schwarz (1876); a European sp., does not occur in NA
Subfamily Xantholininae
Tribe Othiini
Atrecus pilicornis (Paykull, 1790): Hubbard and Schwarz (1878) as Baptolinus pilicornis Payk.; a European sp., does not occur in NA
This family list was last updated: April 28, 2023