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 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.


1 subfamily, 2 tribes, 2 genera, 10 species

Subfamily Heterocerinae

Tribe Augylini

Augyles auromicans (Kiesenwetter, 1851): Pacheco (1978), Downie and Arnett (1996), MSU-ARC

Tribe Heterocerini

?Heterocerus brunneus Melsheimer, 1844: Downie and Arnett (1996), Andrews (1916), MSU-ARC; Pacheco (1978) has this sp. mostly in western U.S., with only IL & PA records east of Montana; MSU has 11 specimens from MI, some IDed by Green or Andrews, but we cannot confirm or disprove those IDs

Heterocerus collaris Kiesenwetter, 1851: Pacheco (1978), Miller (1988), Hatch (1924), Downie and Arnett (1996)

Heterocerus fenestratus (Thunberg, 1784): Pacheco (1978), Hatch (1924), Downie and Arnett (1996), MSU-ARC; some source retain the name Lapsus tristis (Mannerheim, 1853) for this sp.

Heterocerus mollinus Kiesenwetter, 1851: Pacheco (1978); some sources put this in the genus Lanternarius

Heterocerus pallidus Say, 1823: Pacheco (1978), Downie and Arnett (1996), MSU-ARC; some sources put this in the genus Neoheterocerus

Heterocerus parrotus (Pacheco, 1964): Pacheco (1978), Downie and Arnett (1996); some sources put this in the genus Lanternarius

?Heterocerus sandersoni (Pacheco, 1964): Downie and Arnett (1996), INHS:INHSIC; known from nearby states; did Pacheco ID the INHS specimen?

Heterocerus subtilis Miller, 1988: Miller (1988), Downie and Arnett (1996)

?Heterocerus undatus Melsheimer, 1844: Andrews (1923), MSU-ARC; ON,OH in Pacheco 1978 (as Dampfius); MSU has 12 specimens from MI, some IDed by Green or Andrews, but we cannot confirm or disprove those IDs

The following species was reported from Michigan, but we consider it to be adventive, a misidentification or other error:

Heterocerus substriatus Kiesenwetter, 1851: Hubbard and Schwarz (1878); prob. a misidentification; a largely unknown sp., Pacheco (1978) cites no localities other than "N. Amer." from the original description

This family list was last updated: November 23, 2022