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.
Bouchard (2011) recognizes no tribes within the subfamilies Anobiinae, Dorcatominae, Ptilininae or Ernobiinae whereas BugGuide and Arnett et al. (2002) list seven tribes for Anobiinae in America north of Mexico, four for Dorcatominae and three for Ernobiinae. In this case we follow Arnett et al. (2002) and include their tribe names in our list.
BugGuide considers Ptinus clavipes to be a jr. syn. of P. latro, whereas GBIF, itis.gov and Arango and Young (2012) consider both to be valid species. We are following BugGuide.
PTINIDAE
8 subfamilies, 19 tribes, 28 genera, 62 species
Subfamily Anobiinae
Tribe Anobiini
Hemicoelus carinatus (Say, 1823): LeConte (1878), Andrews (1923), Hubbard and Schwarz (1878), Leng (1920), MSU-ARC
Hemicoelus defectus (Fall, 1905): White (1982), MSU-ARC
Hemicoelus pusillus (Fall, 1905): Ruesink and Parsons (2023), MSU-ARC
Hemicoelus umbrosus (Fall, 1905): Arango and Young (2012), White (1982), Downie and Arnett (1996)
Tribe Euceratocerini
Ctenobium antennatum LeConte, 1865: Ruesink and Parsons (2023), MSU-ARC; a rare species known from VA, WV, PA, MA, WI, ON & QC
Tribe Hadrobregmini
Hadrobregmus notatus (Say, 1825): Arango and Young (2012), White (1982), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Microbregma emarginatum emarginatum (Duftschmid, 1825): Arango and Young (2012), White (1982), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Priobium sericeum (Say, 1825): White (1982), Hatch (1924), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Tribe Nicobiini
Trichodesma gibbosa (Say, 1825): Arango and Young (2012), White (1982), Hubbard and Schwarz (1878), MSU-ARC
Tribe Stegobiini
Oligomerus alternans LeConte, 1865: Ruesink and Parsons (2023), MSU-ARC
Oligomerus brevipilis Fall, 1905: Arango and Young (2012), White (1982), MSU-ARC
Oligomerus obtusus LeConte, 1865: White (1982), Leng (1920), Downie and Arnett (1996), MSU-ARC
Oligomerus sericans (Melsheimer, 1846): White (1982), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Stegobium paniceum (Linnaeus, 1758): Ruppel (1977), Hubbard and Schwarz (1878), MSU-ARC
Subfamily Dorcatominae
Tribe Calymmaderini
Calymmaderus nitidus (LeConte, 1865): Ruesink and Parsons (2023), MSU-ARC
Tribe Dorcatomini
Byrrhodes incomptus (LeConte, 1865): Arango and Young (2012), White (1982), Hubbard and Schwarz (1878), MSU-ARC
Byrrhodes intermedius (LeConte, 1878): Arango and Young (2012), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Caenocara bicolor (Germar, 1824): Arango and Young (2012), White (1982), Downie and Arnett (1996), MSU-ARC
Caenocara blanchardi Fall, 1905: Arango and Young (2012), White (1982), Downie and Arnett (1996), MSU-ARC
Caenocara oculatum (Say, 1824): Arango and Young (2012), White (1982), Hatch (1924), Hubbard and Schwarz (1878), MSU-ARC
Caenocara scymnoides LeConte, 1865: Schwarz (1876), Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC
Caenocara tenuipalpum Fall, 1905: Arango and Young (2012), White (1982), Downie and Arnett (1996), MSU-ARC
Dorcatoma falli White, 1965: Ruesink and Parsons (2023), MSU-ARC
Dorcatoma pallicornis LeConte, 1874: Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC
Dorcatoma setulosa LeConte, 1865: Arango and Young (2012), White (1982), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Tribe Petaliini
Petalium alaseriatum Ford, 1973: Ruesink and Parsons (2023), MSU-ARC
Petalium bistriatum (Say, 1825): Hubbard and Schwarz (1878), Ruesink and Parsons (2023), MSU-ARC
Petalium incisum Ford, 1973: Ruesink and Parsons (2023), MSU-ARC
Petalium seriatum Fall, 1905: Ruesink and Parsons (2023), MSU-ARC
Tribe Prothecini
Protheca hispida LeConte, 1865: White (1982)
Sculptotheca puberula (LeConte, 1865): Arango and Young (2012), White (1982), Hubbard and Schwarz (1878), MSU-ARC
Stagetus profundus (LeConte, 1865): White (1982), Hubbard and Schwarz (1878), Downie and Arnett (1996)
Subfamily Ernobiinae
Tribe Ernobiini
Ernobius granulatus LeConte, 1865: Hubbard and Schwarz (1878)
Ernobius lacustris Fall, 1905: Arango and Young (2012), White (1982), Leng (1920), Downie and Arnett (1996)
Ernobius luteipennis LeConte, 1879: White (1982), Leng (1920), Downie and Arnett (1996)
Ernobius mollis (Linnaeus, 1758): Klimaszewski et al. (2017), Leng (1920), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Ernobius opicus Fall, 1905: White (1982), Leng (1920), Downie and Arnett (1996)
Tribe Xestobiini
Utobium elegans (Horn, 1894): White (1982)
??Xestobium rufovillosum (DeGeer, 1774): Hubbard and Schwarz (1878), Downie and Arnett (1996), as Xestobium squalidum Lec. in Hubbard and Schwarz; reported from IL, MI record needs confirmation
Subfamily Eucradinae
Tribe Eucradini
Eucrada humeralis (Melsheimer, 1846): Arango and Young (2012), White (1982), Hubbard and Schwarz (1878), MSU-ARC
Subfamily Mesocoelopodinae
Tribe Tricorynini
Tricorynus borealis (LeConte, 1865): White (1982), Arango and Young (2012), Downie and Arnett (1996)
Tricorynus densus (Fall, 1905): White (1982)
??Tricorynus gravis (LeConte, 1858): Hubbard and Schwarz (1878) as Hemiptychus gravis Lec.; MI is north of known range
Tricorynus punctatus (LeConte, 1865): White (1982), Downie and Arnett (1996), MSU-ARC
??Tricorynus ventralis (LeConte, 1865): Hubbard and Schwarz (1878) as Hemiptychus ventralis Lec.; reported from IL, MI record needs confirmation
Subfamily Ptilininae
Tribe Ptilinini
Ptilinus lobatus Casey, 1898: Ruesink and Parsons (2023), MSU-ARC
Ptilinus pruinosus Casey, 1898: Ruesink and Parsons (2023), MSU-ARC
Ptilinus ruficornis Say, 1823: White (1982), Andrews (1923), Hubbard and Schwarz (1878), MSU-ARC
Subfamily Ptininae
Tribe Gibbiini
Gibbium aequinoctiale Boieldieu, 1854: Ruesink and Parsons (2023), MSU-ARC; cosmopolitan - stored products
Tribe Meziini
Mezium affine Boieldieu, 1856: Ruesink and Parsons (2023), MSU-ARC; cosmopolitan - stored products
?Mezium americanum (Laporte de Castelnau, 1840): Ruppel (1977); or M. affine?
Tribe Ptinini
Ptinus bimaculatus Melsheimer, 1845: Arango and Young (2012), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC
Ptinus concurrens Fall, 1905: Ruesink and Parsons (2023), MSU-ARC; difficult to separate from bimaculatus
Ptinus fur (Linnaeus, 1758): Ruppel (1977), Hubbard and Schwarz (1878), MSU-ARC
Ptinus latro Fabricius, 1775: Ruppel (1983), MSU-ARC; adventive store grain - cosmopolitan, includes P. clavipes as a synonym
Ptinus villiger (Reitter, 1884): Ruppel (1977), MSU-ARC
Subfamily Xyletininae
Tribe Lasiodermini
Lasioderma serricorne (Fabricius, 1792): Ruppel (1977), Hubbard and Schwarz (1878), MSU-ARC
Tribe Xyletinini
Euvrilletta brevis White, 1960: Ruesink and Parsons (2023), MSU-ARC
Euvrilletta harrisii (Fall, 1905): Arango and Young (2012), White (1982), Downie and Arnett (1996), MSU-ARC
Euvrilletta peltata (Harris, 1836): Arango and Young (2012), White (1982), Andrews (1916), MSU-ARC
Xyletinus fucatus LeConte, 1865: Arango and Young (2012), White (1982), Hubbard and Schwarz (1878), MSU-ARC
Xyletinus lugubris LeConte, 1878: LeConte (1878), Leng (1920), Hubbard and Schwarz (1878), Downie and Arnett (1996), MSU-ARC; described from Marquette specimens
The following species were also reported from Michigan, but we consider them to be adventive, misidentifications or other errors:
Subfamily Ptininae
Tribe Gibbiini
Gibbium psylloides (Czenpinski, 1778): UCM:UCMC; BugGuide says "references to Gibbium psylloides outside the Old World are most likely [G. aequinoctiale]"
Subfamily Xyletininae
Tribe Xyletinini
Euvrilletta mucorea (LeConte, 1865): Hubbard and Schwarz (1878) as Xyletinus mucoreus Lec.; E. mucorea is coastal, from MD to TX
This family list was last updated: February 17, 2023