Plecoptera (Stoneflies)
Family: Capniidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Allocapnia warreni | Ross & Yamamoto, 1966 | Arkansas snowfly | pre-1967 | along Clear Creek, Washington County, Arkansas, USA | Missing | Access |
| Capnia lacustra | Jewett, 1965 | Lake Tahoe (benthic) stonefly | 1961-64? | California & Nevada, USA | Missing | Access |
| Capnia willametta | Jewett, 1955 | - | 19 January 1935 | Oregon, USA | Missing | Access |
| Mesocapnia bakeri | Banks, 1918 | - | 1918 | Claremont, California, USA | Missing | Access |
| Mesocapnia ogotoruka | (Jewett, 1964) | Ogotoruk snowfly | pre-1965 | Alaska, USA | Missing | Access |
| Mesocapnia sugluka | (Ricker, 1965) | - | 1965 | Quebec, Canada | Missing | Access |
| Paracapnia disala | Jewett, 1962 | - | - | California & Oregon, USA | Relocated? | Access |
| Paracapnia ensicala | (Jewett, 1962) | - | ? | Thurston County, Washington, USA | Missing | Access |
Family: Chloroperlidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Alloperla roberti | Surdick, 1981 | Robert's stonefly | 1860 | Rock Island, Illinois, USA | Extinct | Access |
Family: Eustheniidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Eusthenia nothofagi | Zwick, 1979 | Otway stonefly | - | Otway Ranges, Victoria, Australia | Rediscovered | Access |
Family: Leuctridae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Leuctra baddecka | Ricker, 1965 | Maritime needlefly | 1965 | Cape Bretton, Nova Scotia, Canada | Missing | Access |
| Leuctra laura | Hitchcock, 1969 | - | 28 June 1969 or later | Coos County, New Hampshire, USA | Missing | Access |
Family: Perlidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Acroneuria flinti | Stark & Gaufin, 1976 | Flint’s common stonefly | ? | West Virginia, USA | Missing | Access |
| Anacroneuria comanche | Stark & Baumann, 1987 | Comanche stonefly | ? | Dierk’s Ford, Kendall County, Texas, USA | Missing | Access |
| Flavoperla ovalolobata | (Wu, 1948) | - | - | China | Rediscovered | Access |
| Kamimuria melli | Wu, 1935 | - | (rediscovered) | southern China | Rediscovered | Access |
| Kamimuria taoi | Wu, 1936 | - | (rediscovered) | southern China | Rediscovered | Access |
| Neoperla longispina | Wu, 1938 | - | (rediscovered) | Hainan Province, China | Rediscovered | Access |
| Neoperla minor | Chu, 1929 | - | (rediscovered) | Zhejiang Province, China | Rediscovered | Access |
Family: Perlodidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Isoperla conspicua | Frison, 1935 | Rare stripetail | ? | Rock Island, Illinois, USA | Missing | Access |
| Isoperla emarginata | Harden & Mickel, 1952 | Crescent stripetail | 13 July 1939 | Grand Marais, Minnesota, USA | Missing | Access |
| Isoperla irregularis | (Klapálek, 1923) | - | USA | Rediscovered | Access | |
| Isoperla jewetti | Szczytko & Stewart, 1976 | Grande Stripetail | 22 April 1939 | El Paso, Texas, USA | Missing | Access |
| Isoperla maxana | Harden & Mickel, 1952 | Minnesota stripetail | 1952 | Fishhook River, Hubbard County, Minnesota, USA | Missing | Access |
|
Perlodinella microlobata |
Wu, 1938 | (rediscovered) | Qinghai & Sichuan provinces, China | Rediscovered | Access |
Family: Taeniopterygidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Oemopteryx loewii | Albarda, 1889 | ? | Europe | Missing | Access | |
| Taeniopteryx araneoides | Klapálek, 1902 | - | Baltic states | Rediscovered | Access |