(Acentrella insignificans)
Acentrella insignificans is a species of small minnow mayfly in the family Baetidae. It is found in Central America, North America. In North America its range includes southwestern, northern Canada, northern Mexico, the northern, southwestern United States, and Alaska. Acentrella is a genus of small minnow mayflies in the family Baetidae. There are at least 20 described species in Acentrella.