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.
Cline et al. (2014) concluded that Prometopia and several related genera that had been placed within the tribe Nitidulini deserved status as a subfamily. Thus we have it in Prometopiinae, a name that Bouchard (2011) listed under Nitidulini as a synonym.
GBIF and ITIS place the species niger (Say) in the genus Carpophilus, whereas BugGuide places it in Colopterus. Parsons (1943) put that species in Colopterus and most authors subsequently followed him, and BugGuide and Downie and Arnett (1996) list Parsons as a reference so that is why they may have it in Colopterus. Interestingly, Carpophilus and Colopterus are now in different subfamilies, with supposedly distinct characters to separate them, so it should be easy to place niger in one or the other genera. However, there doesn’t seem to be any published record transferring or returning niger to Carpophilus. GBIF and ITIS are more likely correct and we have followed them, but it might be another consensus issue.
NITIDULIDAE
8 subfamilies, 5 tribes, 22 genera, 67 species
Subfamily Amphicrossinae
Amphicrossus ciliatus (Olivier, 1811): Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC
Subfamily Carpophilinae
Carpophilus antiquus Melsheimer, 1844: Ruesink and Parsons (2023), MSU-ARC
Carpophilus brachypterus (Say, 1825): Parsons (1943), Price and Young (2006), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Carpophilus corticinus Erichson, 1843: Parsons (1943), Price and Young (2006), Hatch (1924), Downie and Arnett (1996), MSU-ARC
?Carpophilus dimidiatus (Fabricius, 1792): Ruppel (1977); plausible that this species occurs in MI, but the record needs confirmation
Carpophilus discoideus LeConte, 1858: Parsons (1943), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Carpophilus hemipterus (Linnaeus, 1758): Ruesink and Parsons (2023), MSU-ARC
Carpophilus lugubris Murray, 1864: Haack and Ruesink (2020), MSU-ARC
Carpophilus marginatus Erichson, 1843: Parsons (1943), Price and Young (2006), Downie and Arnett (1996), MSU-ARC
Carpophilus marginellus Motschulsky, 1858: Ruesink and Parsons (2023), MSU-ARC
Carpophilus melanopterus Erichson, 1843: Ruesink and Parsons (2023), MSU-ARC
Carpophilus sayi Parsons, 1943: Clampitt et al. (1996), MSU-ARC
Subfamily Cillaeinae
?Colopterus niger (Say, 1823): Hubbard and Schwarz (1878), Hatch (1924); Downie and Arnett (1996), BugGuide, and most recent authors place this in the genus Colopterus, while ITIS & GBIF put it in Carpophilus
Colopterus semitectus (Say, 1825): Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Colopterus truncatus (Randall, 1838): Price and Young (2006), Hubbard and Schwarz (1878), MSU-ARC
Colopterus unicolor (Say, 1825): Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Conotelus obscurus Erichson, 1843: Andrews (1923), Ruesink and Parsons (2023), MSU-ARC
Subfamily Cryptarchinae
Tribe Cryptarchini
Cryptarcha ampla Erichson, 1843: Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Cryptarcha concinna (Melsheimer, 1853): Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC
Cryptarcha strigatula Parsons, 1938: Parsons (1943), Price and Young (2006), Downie and Arnett (1996)
Glischrochilus confluentus (Say, 1823): Parsons (1943), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Glischrochilus fasciatus (Olivier, 1790): Price and Young (2006), Andrews (1923), MSU-ARC
Glischrochilus obtusus (Say, 1835): Parsons (1943), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Glischrochilus quadrisignatus (Say, 1835): BugGuide, CEIR (1966), MSU-ARC
Glischrochilus sanguinolentus (Olivier, 1790): Haack and Ruesink (2020), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Glischrochilus siepmanni Brown, 1932: Parsons (1943), Price and Young (2006), Downie and Arnett (1996), MSU-ARC
Subfamily Epuraeinae
Tribe Epuraeini
Epuraea aestiva (Linnaeus, 1758): Townsend (1889), Hubbard and Schwarz (1878), BugGuide, MSU-ARC
Epuraea alternata Parsons, 1969: Price and Young (2006), Downie and Arnett (1996)
Epuraea, an unnamed species: MSU-ARC; MSU collection has one specimen labeled "Epuraea angusticollis Pars. det. C. Parsons '54" and with a red "paratype" label, but Parsons did not publish this species before his death and therefore the name has no status
Epuraea avara (Randall, 1838): Price and Young (2006), Hatch (1924), Hubbard and Schwarz (1878), MSU-ARC
?Epuraea corticina Erichson, 1843: Andrews (1916), Andrews (1923); known from nearly every surrounding state plus Ontario
Epuraea flavomaculata Mäklin, 1853: Parsons (1943), Price and Young (2006), Downie and Arnett (1996), MSU-ARC
Epuraea nearctica Kirejtshuk & Kvamme, 2001: Andrews (1923), Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC; BugGuide says "records of E. helvola in ... older sources all refer to E. nearctica." MSU specimens that were under helvola are, in fact, nearctica, and we presume the reports of Hubbard and Schwarz (1878) and Andrews (1923) were this species also.
Epuraea obliquus Hatch, 1962: Price and Young (2006), Parsons (1967), Downie & Arnett 1996
Epuraea obtusicollis Reitter, 1873: Price and Young (2006), Leng (1920), Hubbard and Schwarz (1878), MSU-ARC
Epuraea pallescens labilis Erichson, 1843: Price and Young (2006), Leng (1920), Hubbard and Schwarz (1878), MSU-ARC
Epuraea peltoides Horn, 1879: Price and Young (2006), Leng (1920), Hubbard and Schwarz (1878), MSU-ARC
?Epuraea planulata Erichson, 1843: Hubbard and Schwarz (1878); should be in MI but no modern records
Epuraea populi Dodge, 1939: Parsons (1943), Price and Young (2006), Downie & Arnett 1996
Epuraea rufa (Say, 1825): Parsons (1943), Hubbard and Schwarz (1878), MSU-ARC
Epuraea rufida (Melsheimer, 1846): Parsons (1943), Price and Young (2006), MSU-ARC
Epuraea terminalis (Mannerheim, 1843): Price and Young (2006), Hubbard and Schwarz (1878), MSU-ARC
Epuraea truncatella (Mannerheim, 1846): Price and Young (2006), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Subfamily Meligethinae
Brassicogethes simplipes (Easton, 1947): Ruesink and Parsons (2023), MSU-ARC
Fabogethes nigrescens (Stephens, 1830): Ruesink and Parsons (2023), MSU-ARC
Subfamily Nitidulinae
Tribe Cychramini
Cychramus adustus Erichson, 1843: Parsons (1943), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Tribe Cyllodini
Cyllodes biplagiatus LeConte, 1866: Parsons (1943), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Pallodes pallidus (Palisot de Beauvois, 1817): Parsons (1943), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Tribe Nitidulini
Aethina tumida Murray, 1867: Price and Young (2006)
Amphotis ulkei LeConte, 1866: Ruesink and Parsons (2023), MSU-ARC
Lobiopa setosa Harold, 1868: Parsons (1943), Downie and Arnett (1996), MSU-ARC
Lobiopa undulata (Say, 1825): Price and Young (2006), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Nitidula bipunctata (Linnaeus, 1758): Price and Young (2006), Andrews (1923), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Nitidula carnaria (Schaller, 1783): Parsons (1943), Downie and Arnett (1996), MSU-ARC
Nitidula rufipes (Linnaeus, 1767): Andrews (1923), Hatch (1924), Downie and Arnett (1996), MSU-ARC; one specimen in the MSU collection IDed as N. nigra Schaeffer by L.E. Watrous may be that species or it may be N. rufipes. We are chosing to include it here since the stated range of nigra is west of a line from Iowa to Manitoba.
Nitidula ziczac Say, 1825: Parsons (1943), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC; BugGuide and Bosquet (2013) say this is a western sp., but Say described it from material provided by Melsheimer who lived in PA, and Vogt (1950) reported it from MD.
??Omosita colon (Linnaeus, 1758): Pastula and Merritt (2013), Price and Young (2006), Andrews (1923), Hubbard and Schwarz (1878); probably actually O. nearctica Kirejtshuk, which was first described in 1987
Omosita discoidea (Fabricius, 1775): Wolcott (1909), Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC
Omosita nearctica Kirejtshuk, 1987: Ruesink and Parsons (2023), MSU-ARC
Phenolia grossa (Fabricius, 1801): Price and Young (2006), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Soronia guttulata (LeConte, 1863): Parsons (1943), Downie and Arnett (1996)
Stelidota coenosa Erichson, 1843: Price and Young (2006), Parsons (1943), Downie and Arnett (1996), MSU-ARC
Stelidota geminata (Say, 1825): Haack and Ruesink (2020), Gertz (1968), Jantz et al. (1967), iNaturalist Observations, MSU-ARC
Stelidota octomaculata (Say, 1825): Parsons (1943), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Thalycra concolor (LeConte, 1850): Parsons (1943), Howden (1961), Price and Young (2006), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Thalycra orientalis Howden, 1961: Price and Young (2006), Howden (1961), Downie and Arnett (1996), MSU-ARC
Subfamily Prometopiinae
Prometopia sexmaculata (Say, 1825): Hubbard and Schwarz (1878), iNaturalist Observations, Ruesink and Parsons (2023), MSU-ARC
The following species were also reported from Michigan, but we consider them to be adventive, misidentifications or other errors:
Subfamily Carpophilinae
Carpophilus ligneus Murray, 1864: Andrews (1923) as Carpophilus decipiens Horn; a western sp., should not occur in MI
Subfamily Cryptarchinae
Tribe Cryptarchini
Cryptarcha strigata (Fabricius, 1787): Hubbard and Schwarz (1878); a Palearctic sp., does not occur in NA. Parsons (1943) says references to this sp. in NA refer to his new sp. C. strigatula
Glischrochilus quadriguttatus (Fabricius, 1777): Andrews (1916), Hubbard and Schwarz (1878) as Ips quadriguttatus Fab.; a European sp., does not occur in MI
Subfamily Nitidulinae
Tribe Nitidulini
Soronia grisea (Linnaeus, 1758): Hubbard and Schwarz (1878); Palearctic, first NA record 1989 in NF (BugGuide)
This family list was last updated: February 3, 2023