Dytiscidae - Predaceous Diving Beetles

The Nearctic region has been relatively well surveyed, and most of this information has been recently included in a new publication by Larson et al. (2000). This list and nomenclature is largely based on that work as well as provisional records in the UMMZ-Insect Division and the Smithsonian (NMNH web page database). There appear to be 26 genera and 130 species reported for Michigan, with another 39 species in 6 genera likely to occur based on regional records.

Acilius Leach, 1817 (Subfamily Dytiscinae)

Acilius athabascae Larson, 1975 - MN, boreal north (may occur in Isle Royale NP, nw UP)
Acilius fraternus (Harris, 1828), Dytiscus
Acilius mediatus (Say), 1823 Dytiscus
Acilius semisulcatus Aubé, 1838
Acilius sylvanus Hilsenhoff, 1975

Agabetes Crotch, 1873 (Subfamily Agabetinae)

Agabetes acuductus (Harris, 1828) - IN, ON, WI
   • Colyembetes acauductus Harris, 1828
   • Agabus regulosis Aubé, 1838

Agabus Leach, 1817 (Subfamily Colymbetinae)

Agabus aeruginosus Aubé, 1838
Agabus ambiguus (Say), 1823 Colymbetes
Agabus antennatus Leech, 1939 - MN, ON, WI
  • Agabus clavatus LeConte
Agabus anthracinus Mannerheim, 1852
Agabus bicolor (Kirby), 1837 Colymbetes
Agabus bifarius (Kirby), 1837 Colymbetes
Agabus canadensis Fall, 1922 - MN, ON, WI
Agabus confinis (Gyllenhal), 1808 Dytiscus
Agabus confusus (Blatchley, 1910), Rhantus - WI (MI? found south of WI)
  • Agabus ampulus Fall, 1922
Agabus discolor (Harris), 1828 Colymbetes
Agabus disintegratus (Crotch), 1873 Gaurodytes - record in UMMZ-Insect Division
Agabus erichsoni Gemminger and Harold, 1868
Agabus falli (Zimmermann), 1934 - IN, MN, ON, WI
  • Agabus semipunctatus Sharp, 1882
  • Agabus sharpi Fall, 1922
  • Gaurodytes falli Zimmermann, 1934
Agabus flavovittatus Larson and Wolfe, 1998 - IL, IN, OH, ON (expect in s. MI)
Agabus fuscipennis (Paykull), 1798 Dytiscus - ON (boreal)
Agabus gagates Aubé, 1838 - record at NMNH (web page database)
Agabus immaturus Larson, 1991
Agabus inscriptus (Crotch), 1873 Gaurodytes
Agabus larsoni Fery and Nilsson, 1993 - ON
Agabus leptapsis (LeConte), 1878 Gaurodytes - record at NMNH (web page database)
Agabus obtusatus (Say), 1823 Colymbetes - IN, OH, ON
Agabus opacus Aubé, 1837 - record at UMMZ-Insect Division, NMNH (web page database - as A. pseudoconfertus Wallis)
  • Agabus sharpi Fall, 1922
  • Gaurodytes mimmi Shalberg, 1875
  • Agabus sibericus Sharp, 1882
  • Agabus gelidus Fall, 1926
  • Agabus pseudoconfertus Wallis, 1926
  • Agabus sachalinensis Kamiya, 1938
Agabus phaeopterus (Kirby), 1837 Colymbetes
Agabus punctatus Melsheimer, 1844
Agabus punctulatus Aubé, 1838 - IL, IN, MN, ON, WI
Agabus semipunctatus (Kirby), 1837 Colymbetes
Agabus semivittatus LeConte, 1852 -record in UMMZ-Insect Division
Agabus seriatus (Say), 1823 Colymbetes
Agabus subfuscatus Sharp, 1882
Agabus thomsoni (Sahlberg), 1871 Gaurodytes
Agabus wasastjernae (Sahlberg), 1824 Dytiscus

Bidessonotus Régimbart, 1895 (Subfamily Hydroporinae)

Bidessonotus inconspicuus (LeConte), 1855, Hydroporus - record in UMMZ-Insect Division
Bidessonotus pulicarius (Aubé), 1838 Hydroporus - IN, ON

Celina Aubé, 1837 (Subfamily Hydroporinae)

Celina hubbelli Young, 1979

Colymbetes Clairville, 1806 (Subfamily Colymbetinae)

Colymbetes exaratus LeConte, 1862 - IL, MN, WI (western Great Lakes)
Colymbetes paykulli Erichson, 1837
  • Colymbetes longulus LeConte, 1862
Colymbetes sculptilis Harris, 1829

Copelatus Erichson, 1832 (Subfamily Copelatinae)

Copelatus chevrolati Aubé, 1838
   • Copelatus renovatus Guignot, 1952
Copelatus glyphicus (Say), 1823

Coptotomus Say, 1834 (Subfamily Colymbetinae)

Coptotomus longulus LeConte, 1852
  • Coptotomus lenticus Hilsenhoff, 1980
Coptotomus loticus Hilsenhoff, 1980 - IL, IN, ON, WI

Cybister Curtis, 1827 (Subfamily Dytiscinae)

Cybister fimbriolatus (Say), 1823 Dytiscus - record in UMMZ-Insect Division, NMNH (web page database)

Desmopachria Babington, 1841 (Subfamily Hydroporinae)

Desmopachria convexa (Aubé), 1838, Hydroporus - UMMZ-Insect Division, NMNH (web page database)

Dytiscus Linnaeus, 1758 (Subfamily Dytiscinae)

Dytiscus alaskanus Balfour-Browne, 1944 - MN, ON, WI
  • Dytiscus parvulus Motschulsky, 1852
Dytiscus carolinus Aubé, 1838
Dytiscus circumcinctus Ahrens, 1811
Dytiscus cordieri Aubé, 1838
Dytiscus dauricus Gebler, 1832
Dytiscus fasciventris Say, 1824
Dytiscus harrisii Kirby, 1837
Dytiscus hybridus Aubé, 1838
Dytiscus verticalis Say, 1823

Graphoderus Dejean, 1833 (Subfamily Dytiscinae)

Graphoderus fasciocollis (Harris, 1828), Dytiscus
Graphoderus liberus (Say, 1825), Dytiscus
Graphoderus manitobensis Wallis, 1933 - IL, WI (expect in western UP)
Graphoderus occidentalis Horn, 1883 - NMNH (web page database)
Graphoderus perplexus Sharp, 1882

Heterosternuta Strand, 1935 (Subfamily Hydroporinae)

Heterosternuta pulcher (LeConte, 1855) - OH, ON, MN
Heterosternuta wickhami (Zaitzev), 1907 Hydroporus - record in UMMZ-Insect Division

Hydaticus Leach, 1817 (Subfamily Dytiscinae)

Hydaticus aruspex Clark, 1864
  • Hydaticus modestus Sharp, 1882
Hydaticus piceus LeConte, 1863

Hydrocolus (=Hydroporus oblitus-group Fall, 1923) Roughley and Larson, in Larson et al. 2000 (Subfamily Hydroporinae)

Hydrocolus paugus (Fall), 1923, Hydroporus
Hydrocolus persimilis (Crotch), 1873, Hydroporus
  • Hydroporus aequus Fall, 1923
  • Hydroporus acadianus Balfour-Brown, 1948
Hydrocolus rybyae (Larson), 1975 Hydroporus - ON, WI (boreal)
Hydrocolus stagnalis (Gemminger and Harold), 1868) Hydroporus
  • Hydroporus colaris LeConte, 1855

Hydroporus Clairville, 1806 (Subfamily Hydroporinae)

Hydroporus americanus Aubé, 1838
Hydroporus appalachius Sherman, 1913 - MN, ON
  • Hydroporus signatus Sharp, 1882
  • Hydroporus occidentalis Gordon and Post, 1965
Hydroporus badiellus Fall, 1923 - record in UMMZ-Insect Division, NMNH (web page database)
Hydroporus brevicornis Fall, 1917 - record in UMMZ-Insect Division, NMNH (web page database)
Hydroporus columbianus Fall, 1923 - record in UMMZ-Insect Division, NMNH (web page database)
Hydroporus dentellus Fall, 1917 - record in UMMZ-Insect Division, NMNH (web page database)
Hydroporus despectus Sharp, 1882 - record in UMMZ-Insect Division, NMNH (web page database)
  • Hydroporus rusticus Sharp, 1882
Hydroporus dichrous Melsheimer, 1844 - record in UMMZ-Insect Division, NMNH (web page database)
Hydroporus fuscipennis Schaum, 1868 - record at Albertson College of Idaho Collection
  • Hydroporus puberulus Mannerheim, 1853
  • Hydroporus criniticoxis Larson, 1975
Hydroporus gossei Larson and Roughley, 2000
Hydroporus larsoni Nilsson, 1984 - MN, ON, WI (boreal)
Hydroporus melsheimeri Fall, 1917
Hydroporus morio Aubé, 1838
  • Hydroporus melanocephalus Gyllenhal, 1808
  • Hydroporus caliginosus LeConte, 1850
Hydroporus niger Say, 1823
  • Hydroporus modestus Aubé, 1838
  • Hydroporus latifrons Sharp, 1882
Hydroporus notabilis LeConte, 1850
  • Hydroporus arcticus Thompson, 1854
  • Hydroporus niger Anderson, 1962
Hydroporus obscurus Sturm, 1835
  • Hydroporus hockingi Larson, 1975
Hydroporus puberulus LeConte, 1850 - ON, WI (boreal)
  • Hydroporus glabriusculus Fall, 1923
  • Hydroporus levanderi Sahlberg, 1888
Hydroporus rectus Fall, 1923
Hydroporus rufilabris Sharp, 1882
  • Hydroporus somnus Fall, 1923
Hydroporus rufinasus Mannerheim, 1852
Hydrporus signatus Mannerheim, 1853
  • Hydroporus inornatus Sharp, 1882
  • Hydroporus niger Sharp, 1882
Hydroporus striola Gyllenhal, 1827
  • Hydroporus subtonsus LeConte, 1855
Hydroporus tartaricus LeConte, 1850 - record in UMMZ-Insect Division
  • Hydroporus elusivus Gordon, 1981
Hydroporus tenebrosus LeConte, 1850
  • Hydroporus luridipennis LeConte, 1850
  • Hydroporus lutulentus LeConte, 1855
Hydroporus tristis (Paykull), 1798 Dytiscus
  • Hydroporus varians LeConte, 1850
  • Hydroporus ruficapillus Mannerheim, 1852

Hydrovatus Motschulsky, 1853 (Subfamily Hydroporinae)

Hydrovatus pustulatus (Melsheimer), 1844 Hygrotus - see Biström 1997 if other taxa in MI, or Young 1956, 1963
  • Hydrovatus indianensis Blatchley, 1910

Hygrotus Stephens, 1828 (Subfamily Hydroporinae)

Hygrotus acaroides (LeConte), 1855 Hydroporus - NMNH (web page database)
  • Coelambus acaroides winnipeg Wallis, 1926
Hygrotus compar (Fall), 1919 Coelambus
Hygrotus dissimilis Gemminger and Harold, 1868
  • Hydroporus dispar LeConte, 1850
Hygrotus falli (Wallis), 1924 Coelambus
Hygrotus farctus (LeConte), 1855 Hydroporus
Hygrotus impressopunctatus (Schaller, 1783), Dytiscus
  • Hydroporus similis Kirby, 1837
Hygrotus laccophilinus (LeConte), 1878 Hydroporus - UMMZ-Insect Division, record at Albertson College of Idaho Collection
Hygrotus marklini (Gyllenhal), 1813 Hyphydrus
  • Coelambus canadensis Fall, 1919
  • Coelambus virgo Fall, 1919
Hygrotus nubilus (LeConte), 1855 Hydroporus
Hygrotus patruelis (LeConte), 1855 Hydroporus - record in UMMZ-Insect Division
  • Hydroporus discoideus LeConte, 1855
  • Coelambus borealis Fall, 1937
  • Coelambus quebecensis Brown, 1930
Hygrotus picatus (Kirby), 1837 Hydroporus
Hygrotus punctilineatus (Fall, 1919) - questionable record in UMMZ-Insect Division (check)
Hygrotus sayi Balfour-Browne, 1944
  • Laccophilus punctatus Say, 1824, type lost
Hygrotus sellatus (LeConte), 1866 Hydroporus
Hygrotus suturalis (LeConte), 1850 Hydroporus - type specimen from Eagle Harbor, MI
  • Hydroporus ovoideus LeConte, 1850
Hygrotus sylvanus (Fall), 1917 Coelambus - record in UMMz-Insect Division
Hygrotus turbidus (LeConte), 1855 Hydroporus

Ilybius Erichson, 1832 (Subfamily Colymbetinae)

Ilybius angustior (Gyllenhal), 1808 Dytiscus
Ilybius biguttulus (Germar), 1824 Dytiscus
Ilybius confusus Aubé, 1838
Ilybius discendens Sharp, 1882
Ilybius fraterculus LeConte, 1862
Ilybius ignarus (LeConte), 1862 Colymbetes
Ilybius incarinatus Zimmermann, 1928
Ilybius oblitus Sharp, 1882
Ilybius picipes (Kirby), 1837 Colymbetes - NMNH (web page database)
Ilybius pleuriticus LeConte, 1850
Ilybius subaeneus Erichson, 1837 - record in UMMZ-Insect Division

Laccophilus Leach, 1817 (Subfamily Laccophilinae)

Laccophilus biguttatus Kirby, 1837
  • Laccophilus inconspicuus Fall, 1917
Laccophilus fasciatus Aubé, 1838 - record per Hilsenhoff 1992
  • Laccophilus rufus Melsheimer, 1844
  • Laccophilus terminalis Sharp, 1882
Laccophilus maculosus Say, 1823
  • Laccophilus decipiens LeConte, 1852
  • Laccophilus shermani Leech, 1944
Laccophilus proximus Say, 1823
Laccophilus undatus Aubé, 1838 - IL, IN, OH, ON, WI - see Zimmerman 1970 if in MI

Laccornis Gozis, 1914 (Subfamily Hydroporinae)

Laccornis conoideus (LeConte), 1850 Hydroporus
  • Agaporus conoideus Zimmermann, 1919
Laccornis deltoides (Fall), 1923, Agaporus
Laccornis latens (Fall), 1937Agaporus

Liodessus Guignot, 1939 (Subfamily Hydroporinae)

Liodessus affinis (Say), 1823 Hydroporus
Liodessus cantralli (Young), 1953 Bidessus
Liodessus flavicollis (LeConte), 1855 Hydroporus
Liodessus fuscatus (Crotch), 1873 Hydroporus
Liodessus noviaffinis Miller, 1998 - IN
Liodessus obscurellus (LeConte, 1852), Hydroporus - IN, MN, WI

Lioporeus Guignot, 1950 (Subfamily Hydroporinae)

Lioporeus triangularis (Fall, 1917) - MI? check collection, and Wolfe 1983; OH, WI

Matus Aubé, 1836 (Subfamily Colymbetinae)

Matus bicarinatus (Say), 1823 Colymbetes
Matus ovatus Leech, 1941

Nebrioporus Régimbart, 1906 (Subfamily Hydroporinae)

Nebrioporus rotundatus (LeConte), 1863 Hydroporus

Neoporus Guignot, 1931 (Subfamily Hydroporinae)

Neoporus carolinus (Fall), 1917 Hydroporus - IN, ON
Neoporus clypealis (Sharp), 1882 Hydroporus
Neoporus dimidiatus (Gemminger and Harold, 1868), Hydroporus - ON
  • Hydroporus semirufus LeConte, 1850
  • Hydroporus solitarius Sharp, 1882
Neoporus mellitus (LeConte), 1855 Hydroporus
Neoporus spurius (LeConte), 1855 Hydroporus
Neoporus superioris (Balfour-Browne), 1944 Hydroporus - MN, ON, WI
  • Hydroporus superioris LeConte, 1850
Neoporus tennetum (Wolfe), 1984 Hydroporus
Neoporus undulatus (Say), 1823 Hydroporus - UMMZ-Insect Division
  • Hydroporus fasciatus Harris, 1828
  • Hydroporus pubipennis Aubé, 1838
  • Hydroporus velutinus Aubé, 1838
  • Hydroporus punctatissimus Aubé, 1838
  • Hydroporus consimilis LeConte, 1850
  • Hydroporus scrutator Sharp, 1882
  • Hydroporus anticus Sharp, 1882
  • Hydroporus placatus Fall, 1923
Neoporus vitiosus (LeConte), 1855 Hydroporus
Neoporus vittatus (LeConte), 1855 Hydroporus - IL, IN, ON, MN, WI

Neoscutopterus Balfour-Browne, 1943 (Subfamily Colymbetinae)

Neoscutopterus angustus (LeConte), 1850 Agabus - UMMZ-Insect Division, NMNH (web page database)
Neoscutopterus hornii (Crotch), 1873 Scutopterus - UMMZ-Insect Division, NMNH (web page database)

Oreodytes Seidlitz, 1887 (Subfamily Hydroporinae)

Oreodytes scitulus (LeConte), 1855 Hydroporus - NMNH (web page database)

Rhantus Dejean, 1833 (Subfamily Colymbetinae)

Rhantus binotatus (Harris), 1828 Colymbetes
Rhantus consimilis Motschoulsky, 1859
Rhantus gutticollis (Say), 1834 Colymbetes - WI (maybe extreme western UP)
Rhantus sericans Sharp, 1882 - MN, ON, WI
Rhantus sinuatus (LeConte), 1862 Colymbetes
Rhantus suturellus (Harris), 1828 Colymbetes
Rhantus wallisi Hatch, 1953

Sanfilippodytes Franciscolo, 1979 (Subfamily Hydroporinae)

Sanfilippodytes pseudovilis (Young), 1953 Hydroporus

Stictotarsus Zimmermann, 1919 (Subfamily Hydroporinae)

Stictotarsus griseostriatus (DeGeer), 1774, Dytiscus - record in UMMZ-Insect Division, NMNH (web page database)

Thermonectus Dejean, 1837 (Subfamily Dytiscinae)

Thermonectus basillaris (Harris, 1829), Dytiscus - IL, IN, ON, WI

Uvarus Guignot, 1939 (Subfamily Hydroporinae)

Uvarus granarius (Aubé), 1838 Hydroporus - NMNH (web page database)
Uvarus falli (Young), 1940 Bidessus - ON
Uvarus lacustrus (Say), 1823 Hydroporus - record in UMMZ-Insect Division, NMNH (web page database)

Page created: November 02, 2002 - Last updated: April 9, 2006 (EB)