In all other orders winged forms are as only found on adult forms, the last stage of development. A typical life cycle will last one year. Most of the species in Texas prefer flowing or highly oxygenated water situations. A few species develop in lakes or ponds and their distribution in water is usually limited by oxygen content of the water. They are medically harmless.
Immature mayflies are an important food source for fish.
Many lures and artificial flies are patterned after them. No management required, not considered a pest. For additional information, contact your local Texas extension service agent, or search for other state extension service offices.