Wingless adult termite (alate)
These termites emerged all across Los Altos CA on a sunny day that followed a massive rain storm in October 2009.
Western subterranean termites swarm in large numbers to find a mate from another colony nest to start up a new colony.
These alates (reproductives) fly up to 1/4 mile, then land and break off their wings. A suitable location for nesting should provide moisture and a readily available timber food source close by. A king and a queen will find a crack or hole in wood in which to make their breeding chamber.