Males and females fly and couple in open areas along roadways, appearing to swarm in weak flight. Although females live for only a week or so, adult flight activity lasts for a period of about 4 weeks. Eggs are deposited in swampy areas and ditches. Thereafter, they pupate in the soil and emerge as adults in about 8 days. Larvae have chewing mouthparts.
Adults fly mainly during daylight hours and feed on nectar and other moisture sources.
They are naturally attracted to open areas such as roadways through wooded areas. Larvae feed on decomposing organic matter and sometimes plant roots. For additional information, contact your local Texas extension service agent, or search for other state extension service offices.