Lovebug flights can number in the hundreds of thousands. The slow, drifting movement of the insects is almost reminiscent of snow fall except the flies also rise in the air. Two major flights occur each year, first in late spring, then again in late summer. In south Florida, a third (but smaller) flight can occur in December. The spring flight occurs during late April and May, the summer during late August and September. Flights extend over periods of four to five weeks.
Mating takes place almost immediately after emergence of the females. Adult females live only three to four days.