The white to light tan wing covers on the insect's back are often marked with fine dark lines. Larvae are also predatory and similarly equipped. Northeastern beach tiger beetles have a full, two-year life cycle. Adults emerge in late June, reach peak abundance by mid-July, and decline through early September. They feed, mate and bask at the water's edge on warm, sunny days.
Some adults are also active on warm, calm evenings.
High body heat is necessary for maximum predatory activity. Adults also regularly scavenge dead crabs and fish. Females deposit their eggs in the sand after mating, higher up the beach in the dunes. Eggs hatch and larvae appear in late July and August. Most overwinter as second instars.