Our house has been totally covered over the last few days with lovebugs (Plecia nearctica). They are all over the windows, the doors, the walls--everywhere. They swarm twice a year, in late Spring and late summer.
This isn't a two headed bug. It's two bugs that are. . .connected.(Denise--have fun with this one.) The male and female attach at the rear, and stay that way the rest of their lives--they never disconnect.. In fact, once the male dies, the female drags him around until she lays her eggs a few days later.
There is also an old wives-tale that stats the strength of the hurricane season is directly related to the strenth of the lovebug swarm. If that's true, it;s time to put on the hurricane shutters.