Baetidae is a family of mayflies with about 1000 described species in 110 genera distributed worldwide. These are among the smallest of mayflies, adults rarely exceeding 10 mm in length excluding the two long slender tails and sometimes much smaller, and members of the family are often referred to as small mayflies or small minnow mayflies. Most species have long oval forewings with very few cross veins but the hindwings are usually very small or even absent. The males often have very large eyes, shaped like turrets above the head.
Callibaetis is a genus of small minnow mayflies in the family Baetidae. There are at least 30 described species in Callibaetis.
Callibaetis montanus is a species of small minnow mayfly in the family Baetidae. It is found in Central America and North America. In North America its range includes all of Mexico and the southwestern United States.
Leucrocuta thetis is a species of flatheaded mayfly in the family Heptageniidae. It is found in North America.
Epeorus dispar is a species of flatheaded mayfly in the family Heptageniidae. It is found in North America.
Ameletus lineatus is a species of combmouthed minnow mayfly in the family Ameletidae. It is found in North America.
Acentrella insignificans is a species of small minnow mayfly in the family Baetidae. It is found in Central America to North America. In North America its range includes southwestern, northern Canada, northern Mexico, the northern, southwestern United States, and Alaska.
Ephoron album, the white fly, is a species of pale burrower mayfly in the family Polymitarcyidae. It is found in North America.
Ameletus ludens is a species of combmouthed minnow mayfly in the family Ameletidae. It is found in North America.
Camelobaetidius warreni is a species of small minnow mayfly in the family Baetidae. It is found in Central America and North America. In North America, its range includes southwestern Canada, all of Mexico, the northern, and southwestern United States.
Callibaetis floridanus is a species of small minnow mayfly in the family Baetidae. It is found in Central America and North America. In North America its range includes all of Mexico, the southern, and northeastern United States.
Drunella tuberculata is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in North America.
Callibaetis pallidus is a species of small minnow mayfly in the family Baetidae. It is found in North America.
Callibaetis fluctuans is a species of small minnow mayfly in the family Baetidae. It is found in southeastern Canada, the continental United States, and Alaska.
Callibaetis californicus is a species of small minnow mayfly in the family Baetidae. It is found in Central America and North America. In North America its range includes all of Mexico, and the western United States.
Heptagenia elegantula is a species of flatheaded mayfly in the family Heptageniidae. It is found in Central America and North America. In North America its range includes all of Canada, northern Mexico, and the continental United States.
Callibaetis pretiosus is a species of small minnow mayfly in the family Baetidae. It is found in North America.
Callibaetis skokianus is a species of small minnow mayfly in the family Baetidae. It is found in the south half of Canada and the northeastern United States.
Callibaetis ferrugineus is a species of small minnow mayfly in the family Baetidae. It is found in North America.
Isonychia sicca is a species of brushlegged mayfly in the family Isonychiidae. It is found in Central America and North America. In North America its range includes southeastern Canada, and all of Mexico.
