Laccornis is a genus of beetles in the family Dytiscidae, containing the following species:
- Laccornis conoideus <small>(LeConte, 1850)</small>
- Laccornis deltoides <small>(Fall, 1923)</small>
- Laccornis difformis <small>(LeConte, 1855)</small>
- Laccornis etnieri <small>Wolfe & Spangler, 1985</small>
- Laccornis kocae <small>(Ganglbauer, 1904)</small>
- Laccornis latens <small>(Fall, 1937)</small>
- Laccornis nemorosus <small>Wolfe & Roughley, 1990</small>
- Laccornis oblongus <small>(Stephens, 1835)</small>
- Laccornis pacificus <small>Leech, 1940</small>
- Laccornis schusteri <small>Wolfe & Spangler, 1985</small>
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