<P> In early morning the insects cling to blades of grass in the shade . As soon as sun hits the spot they fly up and search for shade, after which they die . They do not fly as a swarm, but congregate in thousands . </P> <P> Lovebugs' larvae feed on partially decayed vegetation in the landscape and, in this respect, are beneficial to humans . Adults primarily feed on nectar from various plants, particularly sweet clover, goldenrod, and Brazilian pepper . </P> <P> Localized lovebug flights can number in the hundreds of thousands . The slow, drifting movement of the insects is almost reminiscent of snow fall except that the flies also rise in the air . Two major flights occur each year, first in late spring, then in late summer . In south Florida, a third (but smaller) flight can occur in December . The spring flight occurs during late April and May, and in 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, while males live a little longer . They have to stick to each other at all times . </P> <P> This species' reputation as a public nuisance is due not to any bite or sting (it is incapable of either), but to its slightly acidic body chemistry . Because airborne lovebugs can exist in enormous numbers near highways, they die in large numbers on automobile windshields, hoods, and radiator grills when the vehicles travel at high speeds . If left for more than an hour or two, the remains become extremely difficult to remove . Their body chemistry has a nearly neutral 6.5 pH but may become acidic at 4.25 pH if left on the car for a day . In the past, the acidity of the dead adult body, especially the female's egg masses, often resulted in pits and etches in automotive paint and chrome if not quickly removed . However, advances in automotive paints and protective coatings have reduced this threat significantly . Now the greatest concern is excessive clogging of vehicle radiator air passages by the bodies of the adults, with a reduction of the cooling effect on engines, and the obstruction of windshields when the remains of the adults and egg masses are smeared on the glass . </P>

When do the love bugs come out in florida
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