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.
ELMIDAE
1 subfamily, 3 tribes, 6 genera, 21 species
Subfamily Elminae
Tribe Ancyronychini
Ancyronyx variegatus (Germar, 1824): Brown (1983b), Bright (2015), Hubbard and Schwarz (1878), MSU-ARC
Tribe Elmini
Dubiraphia bivittata (LeConte, 1852): Haack and Ruesink (2020), Bright (2015), MSU-ARC
Dubiraphia minima Hilsenhoff, 1973: Bright (2015), OMNH:RINVRT
Dubiraphia quadrinotata (Say, 1825): Bright (2015), Hubbard and Schwarz (1878), FMNH:FMNHINS
Dubiraphia vittata (Melsheimer, 1844): Brown (1983b), Bright (2015), Downie and Arnett (1996), MSU-ARC
Microcylloepus pusillus (LeConte, 1852): Snitgen (1996), Downie and Arnett (1996), FMNH:FMNHINS
Optioservus fastiditus (LeConte), 1850: Brown (1983b), Bright (2015), Downie and Arnett (1996), MSU-ARC
??Optioservus ovalis (LeConte, 1863): FMNH:FMNHINS; Lake Co., MI may be a bit W of its range
Optioservus trivittatus (Brown, 1930): Brown (1983b), Bright (2015), FMNH:FMNHINS
Stenelmis cheryl Brown, 1987: Ruesink and Parsons (2023), MSU-ARC; used to go under the name S. bicarinata
??Stenelmis concinna Sanderson, 1938: FMNH:FMNHINS; Barry Co., prob. should not be this far west
Stenelmis crenata (Say, 1824): Sanderson (1938), Brown (1983b), Bright (2015), MSU-ARC
??Stenelmis decorata Sanderson, 1938: Bright (2015); MI seems a little north of its expected range
Stenelmis douglasensis Sanderson, 1938: Sanderson (1938), Brown (1983b), Bright (2015), Downie and Arnett (1996), MSU-ARC
Stenelmis lignicola Schmude & Brown, 1992: Schmude et al. (1992), Bright (2015), Downie and Arnett (1996), MSU-ARC
Stenelmis mera Sanderson, 1938: Bright (2015), Evans (2014)
??Stenelmis musgravei Sanderson, 1938: Bright (2015); MI seems a little north of its expected range, can only be separated from S. quadrimaculata by male genitalia
Stenelmis quadrimaculata Horn, 1870: Sanderson (1938), Brown (1983b), Bright (2015), Downie and Arnett (1996), MSU-ARC
Stenelmis sandersoni Musgrave, 1940: Bright (2015), MSU-ARC
Stenelmis sexlineata Sanderson, 1938: Bright (2015), MSU-ARC
Tribe Macronychini
Macronychus glabratus Say, 1825: Brown (1983b), Townsend (1889), Bright (2015), Downie and Arnett (1996), MSU-ARC
The following species were reported from Michigan, but we consider them to be adventive, misidentifications or other errors:
Subfamily Elminae
Tribe Elmini
Stenelmis bicarinata LeConte, 1852: Bright (2015), Hubbard and Schwarz (1878), as Elmis bicarinatus Lec. in H&S; should not be as far north as MI, old records probably refer to S. cheryl
Stenelmis grossa Sanderson, 1938: Bright (2015); a s US sp., should not be in MI
This family list was last updated: November 6, 2022