Ephemerellidae are known as the spiny crawler mayflies. They are a family of the order Ephemeroptera. There are eight genera consisting of a total 90 species. They are distributed throughout North America as well as the UK. Their habitat is lotic-erosional, they are found in all sizes of flowing streams on different types of substrates where there is reduced flow. They are even found on the shores of lakes and beaches where there is wave action present. They move by swimming and clinging, they are very well camouflaged. Most species have one generation per year. They are mostly collector-gatherers.
Ephemerella excrucians, the pale morning dun, is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in all of Canada and the continental United States.
Ephemerella is a genus of spiny crawler mayflies in the family Ephemerellidae. There are about 19 described species in Ephemerella.
Serratella micheneri is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in Central America, North America. In North America its range includes northern Mexico, and the western United States.
Drunella coloradensis is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in Central America and North America. In North America its range includes southwestern, northern Canada, northern Mexico, the western United States, and Alaska.
Ephemerella subvaria, the red quill, is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in North America.
Notapictinus aurivillii, the piesmatids, is a species of flat bug in the family Aradidae. 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.
Callibaetis pictus 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 northern, and southwestern United States.
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.
Ecdyonurus criddlei, the little slate-winged dun, 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 southwestern Canada, northern Mexico, the western United States, and Hawaii.
Stenacron interpunctatum, the stenacron mayfly, is a species of flatheaded mayfly in the family Heptageniidae. It is found in North America.
Ephemerella invaria, the sulphur dun, is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in southeastern and northern Canada and the eastern United States.
Ephemerella maculata is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in North America.
Ephemerella tibialis is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in North America.
Heptagenia elegantula is a species of flatheaded mayfly in the family Heptageniidae. It is found in Central America, North America. In North America its range includes all of Canada, northern Mexico, and the continental United States.
Ephemerella dorothea is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in North America.
Drunella flavilinea is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in Central America and North America. In North America its range includes southwestern, northern Canada, northern Mexico, and the western United States.
Siphlonurus occidentalis is a species of primitive minnow mayfly in the family Siphlonuridae. It is found in Central America to North America. In North America its range includes southwestern, northern Canada, all of Mexico, the western United States, and Alaska.
Heterocloeon amplum 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 northern Mexico, the southern, and northeastern United States.
