
The Nemouridae are a family of stoneflies containing more than 700 described species, occurring primarily in the Holarctic region. Members of this family are commonly known as spring stoneflies or brown stoneflies. Fly fishermen often refer to these insects as tiny winter blacks.

Amphinemura is a genus of spring stoneflies in the family Nemouridae. There are about 18 described species in Amphinemura.

Lednia is a monotypic genus, containing the single species Lednia tumana —a rare, alpine, aquatic insect that is endangered due to likely loss of glaciers and snowpacks in the Glacier National Park and other habitat in the Rocky Mountains due to climate change. The insect lives in the coldest streams just downstream of the glacier or snowbank sources and is considered as an early warning indicator species of climate warming in mountain ecosystems. The Fisheries and Wildlife Service is being petitioned to protect the species under the U.S..Endangered Species Act.

Nemoura is a genus of spring stoneflies in the family Nemouridae. There are more than 190 described species in Nemoura.

Prostoia is a genus of spring stoneflies in the family Nemouridae. There are about five described species in Prostoia.

Prostoia completa, the central forestfly, is a species of spring stonefly in the family Nemouridae. It is found in North America.

Shipsa is a genus of spring stoneflies in the family Nemouridae. It is monotypic, being represented by the single species, Shipsa rotunda.

Soyedina is a genus of stoneflies belonging to the family Nemouridae. This exclusively Nearctic genus was originally erected as a subgenus of Nemoura but was elevated to genus status by Joachim Illies in 1966. There are currently 11 described species, most only identifiable by small differences in the genitalia.

Soyedina vallicularia, the valley forestfly, is a species of spring stonefly in the family Nemouridae. It is found in North America.

Zapada cinctipes, the common forestfly, is a species of spring stonefly in the family Nemouridae. It is found in North America.