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"The <em>Dyticus marginalis</em>, a European species very common in ponds, attains a length of more than an inch." &mdash; Goodrich, 1859

Great Diving Beetle Adult and Larvae

"The Dyticus marginalis, a European species very common in ponds, attains a length of more…

"The <em>Dyticus marginalis</em>, a European species very common in ponds, attains a length of more than an inch." &mdash; Goodrich, 1859

Great Diving Beetle Female

"The Dyticus marginalis, a European species very common in ponds, attains a length of more…