Elmidae - Riffle Beetles

There are 18 species in 5 genera recorded in Michigan,with another 6 species and 1 genus that may also likely be found in the state based on their known regional distribution.

Ancyronyx Erichson 1847

Ancyronyx variegatus (Germar), 1824 Macronychus (MI record, author pers. obs., Rouge River, Wayne Co.)
  • Elmis cincta Say, 1825
  • Hydrochus parumoculatus Hardy, 1852

Dubiraphia Sanderson 1954

Dubiraphia bivittata (LeConte) 1852, Elmis
Dubiraphia minima Hilsenhoff, 1973 - IN, OH, WI
Dubiraphia quadrinotata (Say), 1825 Elmis - UMMZ-Insect Division, NMNH (web page database)
Dubiraphia robusta Hilsenhoff, 1973 - WI (expect in w. UP)
Dubiraphia vittata (Melsheimer), 1844 Elmis - (Brown 1983), NMNH (web page database)

Macronychus Müller 1806

Macronychus glabratus Say, 1825 - UMMZ-Insect Division, EB (pers. coll.)
   • Macronychus lateralis Melsheimer, 1844

Microcylloepus Hinton 1935

Microcylloepus pusillus (LeConte), 1852 Stenelmis - ON, WI (expect in w. UP)

Optioservus Sanderson 1954

Optioservus fastiditus (LeConte), 1850 Limnius
Optioservus trivittatus (Brown), 1930 Limnius

Stenelmis Dufour 1835

Stenelmis antennalis Sanderson, 1938 - MN, WI
Stenelmis bicarinata LeConte, 1852
  • Stenelmis maerkelii Motschulsky, 1854
  • Stenelmis vittipennis Zimmerman, 1869
Stenelmis cheryl Brown, 1987
Stenelmis crenata (Say), 1824 Elmis
  • Stenelmis sordida Motschulsky, 1859
Stenelmis decorata Sanderson, 1938 - (Schmude 1992)
Stenelmis douglasensis Sanderson, 1938
Stenelmis fuscata Blatchley, 1925 - WI
Stenelmis grossa Sanderson, 1938 - (Schmude 1992)
Stenelmis lignicola Schmude and Brown, 1992 - Kalamazoo Co., Gull Lake Biological Station, specimen at MSU Cook Collection - record in Schumde and Brown, 1992
  • Stenelmis convexula Brown, 1956
  • Stenelmis markelii [sic] Finni and Skinner, 1975
  • Stenelmis crenata, S. sulcata Patrick, 1961
  • Stenelmis bicarinata, S. convexula, S. crenata, S. decorata(in part), S. hungerfordi (in part), S. sulcata Patrick et al., 1967
  • Stenelmis spp. Benke, 1984
Stenelmis mera Sanderson, 1938 - (Schmude 1992)
Stenelmis musgravei Sanderson, 1938
Stenelmis quadrimaculata Horn, 1870
  • Stenelmis sulcata Blatchley, 1910
  • Stenelmis blatchleyi Musgrave, 1933
Stenelmis sandersoni Musgrave, 1940
  • Stenelmis tarsalis Sanderson, 1938
Stenelmis sexlineata Sanderson, 1938 - (Schmude 1992)

Page created: November 07, 2002 - Last update: May 9, 2006 (EB)