Orthoptera (Grasshoppers, Locusts, Crickets, Wetas and Katydids)
Family: Acrididae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Acrolophitus pulchellus | Bruner, 1890 | Idaho point-headed grasshopper | (rediscovered) | Birch Creek, Big Lost River, and Little Lost River Sinks Drainages, Idaho (east central), USA | Rediscovered | Access |
| Allaga ambigua | Karsch, 1896 | Zanzibar giant forest grasshopper | (rediscovered) | Tanzania & Zanzibar | Rediscovered | Access |
| Anischnansis burtti | (Uvarov, 1941) | Usambara splendid grasshopper | 1966 | East Usambara Mts., Tanzania | Missing | Access |
| Appalachia hebardi | Rehn & Rehn, 1936 | Appalachian grasshopper | (rediscovered) | Pennsylvania, Virginia and West Virginia, USA | Rediscovered | Access |
| Aztecacris gloriosus | Hebard, 1935 | Atascosa gem grasshopper | (rediscovered) | Pajarito Mountains, Santa Cruz County, Arizona, USA | Rediscovered | Access |
| Circotettix crotalum | Rehn, 1921 | Rattling grasshopper | 1947/8 or later | Spring and Sheep Mountains, southern Nevada, USA | Missing | Access |
| Conozoa constricta | Henderson, 1924 | - | ? | Utah, USA | Missing | Access |
| Conozoa hyalina | (McNeill, 1901) | Central Valley grasshopper | 1953 | Central Valley, California, USA | Extinct | Access |
| Derotmema piute | Rehn, 1919 | - | ? | Nevada, USA | Missing | Access |
| Eupropacris abbreviata | Miller, 1929 | Kilosa noble grasshopper | 1926 | Kilosa, Tanzania | Missing | Access |
| Eximacris phenax | Otte, 1984 | Big cedar grasshopper | ? | Kiamichi Mountains, Oklahoma, USA | Invalid (synonym) | Access |
| Eximacris superbum | (Hebard, 1937) | Superb spharagemon grasshopper | ? | Texas (southern), USA | Invalid (synonym) | Access |
| Italopodisma baccettii | (La Greca, 1969) | Baccetti's apennine grasshopper | 1996 | Gran Sasso, Abruzzo, Italy | Missing | Access |
| Melanoplus cameronis | Roberts, 1947 | Cameron locust (proposed), Brownsville short-wing grasshopper | ? | Brownsville, Cameron County, Texas, USA | Extant? | Access |
| Melanoplus foxi | Hebard, 1923 | Fox's short-wing grasshopper | (rediscovered) | Georgia, USA | Rediscovered | Access |
| Melanoplus gracilipes | Scudder, 1897 | Small-footed locust | ? | Los Angeles, California, USA | Missing | Access |
| Melanoplus ligenolus | Scudder, 1899 | - | ? | California, USA | Missing | Access |
| Melanoplus macclungi | Rehn, 1946 | Macclung’s locust | ? | Kansas & Oklahoma, USA | Overlooked | Access |
| Melanoplus mastigiphallus | Strohecker, 1941 | - | ? | Bexar County, Texas, USA | Missing | Access |
| Melanoplus microtatus | Hebard, 1919 | - | ? | California, USA | Missing | Access |
| Melanoplus nanciae | Deyrup, 1997 | Ocala claw(-)cercus grasshopper | ? | Ocala National Forest, Lake County, Florida, USA | Missing | Access |
| Melanoplus nanus | Scudder, 1899 | Dwarf locust | ? | Berkeley, California, USA | Missing | Access |
| Melanoplus pegasus | Hebard, 1919 | Pegasus locust, Swift locust | ? | Billy's Island, Okeefenokee Swamp, Charlton County, Georgia, USA | Missing | Access |
| Melanoplus spretus | Walsh, 1866 | Rocky Mountain locust, Rocky Mountain grasshopper | 1902 | Rocky Mountains, USA | Extinct | Access |
| Melanoplus warneri | Little, 1929 | Warner's locust, Warner's spur-throat grasshopper | 10 May 1925 or later | Texas, USA | Missing | Access |
| Microtes pogonata | (Strohecker, 1963) | - | July 1959 or later | San Luis Obispo County & Santa Barbara County, California, USA | Missing | Access |
| Ogasawaracris gloriosus | Ito, 2003 | - | 1984 | Ogasawara Islands, Japan | Missing | Access |
|
Oshwea dubiosa
|
Ramme, 1929 | - | (rediscovered) | DR Congo & Uganda | Rediscovered | Access |
| Paroxya bermudensis | Rehn, 1909 | Bermuda flightless grasshopper | 15 January 1909 or later | Bermuda | Missing | Access |
| Schayera baiulus | Erichson, 1842 | Schayer's grasshopper | (rediscovered) | Tasmania, Australia | Rediscovered | Access |
| Spharagemon bunites | Otte, 1984 | - | 8 August 1940 | California, USA | Missing | Access |
| Trimerotropis occulens | Otte, 1984 | Lompoc grasshopper | ? | California, USA | Rediscovered? | Access |
| Willemsella bicolor | Miller, 1934 | (rediscovered) | Selangor, Malaysia | Rediscovered | Access | |
| Xanthippus aquilonius | Otte, 1984 | - | 31 May 1929 or later | Vernon, British Columbia, Canada | Missing | Access |
Family: Anostostomatidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Deinacrida elegans | Gibbs, 1999 | (rediscovered) | South Island, New Zealand | Rediscovered | Access | |
| Deinacrida parva | Buller, 1894 | Kaikoura weta | (rediscovered) | Nelson, South Island, New Zealand | Rediscovered | Access |
| Deinacrida tibiospina | Salmon, 1950 | Mount Arthur giant weta | (rediscovered) | New Zealand | Rediscovered | Access |
| Motuweta isolata |
Johns, 1997 | Mercury Islands tusked wētā, Middle Island tusked wētā | (rediscovered) | Mercury Islands, North Island (off north-eastern coast), New Zealand | Formerly extinct in the wild | Access |
Family: Dericorythidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Dericorys minutus | Chopard, 1954 | Maspalomas bow-legged grasshopper, Gran Canaria crested grasshopper | (rediscovered) | Gran Canaria, Canary Islands, North Africa | Rediscovered | Access |
Family: Eumastacidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Gyabus fusiformis | (Bey-Beinko, 1949) | (rediscovered) | Ladakh, India | Rediscovered | Access | |
| Psychomastax deserticola indigena | Rehn & Grant 1959 | ? | Nevada, USA | Missing | Access |
Family: Euschmidtiidae1
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Chromomastax movogovodia | Descamps, 1964 | Morogoro monkey grasshopper | 1934 | Kingolwera, Morogoro District, Tanzania | Missing | Access |
| Euschmidtia bidens | Descamps, 1964 | Mlingano monkey grasshopper | 1953 | Mlingano, Ngomeni, Tanzania | Missing | Access |
| Euschmidtia burtti | Descamps, 1964 | Burtt's monkey grasshopper | April 1954 | Kingolwera, Morogoro, Tanzania | Missing | Access |
| Euschmidtia dirshi | Descamps, 1964 | Dirsh's monkey grasshopper | 1954 | near Morogoro, Tanzania | Missing | Access |
| Euschmidtia phippsi | Descamps, 1964 | Phipps' monkey grasshopper | 1952 | East Usambara Mountains, Tanzania | Missing | Access |
| Euschmidtia viridifasciata | Descamps, 1964 | Dar-es-Salaam monkey grasshopper | 1964 | Dar es Salaam, Tanzania | Missing | Access |
1 A lack of appropriate surveys may be the reason these species are 'missing'. However, information is lacking and the IUCN lists them all as Critically Endangered (Possibly Extinct).
Family: Gryllidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Gryllus abnormis | Chopard, 1970 | 1965-67 or later | St. Helena | Missing | Access | |
| Leptogryllus deceptor | Perkins, 1910 | Oahu deceptor bush cricket | 1910 or before | Oahu, Hawaiian Islands, USA | Missing | Access |
Family: Lentulidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Chromousambilla burtti | Jago, 1981 | Mpwapwa silent grasshopper | 1947 | Kikombo, Mpwapwa, Tanzania | Missing | Access |
Family: Phalangopsidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Phalangacris alluaudi | Bolívar, 1895 | Mahé boulder cricket | (rediscovered) | Mahé, Seychelles | Rediscovered | Access |
Family: Pyrgacrididae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Pyrgacris relictus | Descamps, 1968 | (rediscovered) | Mauritius, Mascarene Islands | Rediscovered | Access |
Family: Pyrgomorphidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
|
Burmorthacris subaptera |
Kevan, Singh & Akbar, 1964 | - | (rediscovered) | Myanmar (=Burma) | Rediscovered | Access |
| Petasida ephippigera | White, 1845 | Leichhardt’s grasshopper | (rediscovered) | Northern Territory, Australia | Rediscovered | Access |
Family: Tetrigidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Andriana hancocki | (Bruner, 1910) | Big royal pygmy grasshopper | 1971 | Madagascar | Missing | Access |
| Cryptotettix insularis | Günther, 1974 | Island hiding pygmy grasshopper | 1959 | Madagascar | Missing | Access |
| Hybotettix camelus | Devriese, 1991 | Camelback royal pygmy grasshopper | pre-1967 | Madagascar | Missing | Access |
| Procytettix fusiformis | Bolívar, 1912 | Seychelles shortwinged groundhopper | 1909 | Mahé Island, Seychelles | Missing | Access |
Family: Tettigoniidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Anonconotus apenninigenus | (Targioni-Tozzetti, 1881) | Southern alpine bush-cricket | ? | Apennine Mountains, Italy | Invalid? | Access |
| Arachnoscelis arachnoides | (Redtenbacher, 1891) | - | (rediscovered) | Colombia (& Ecuador?) | Rediscovered | Access |
| Belocephalus micanopy | Davis, 1914 | Big Pine Key conehead katydid | ? | Big Pine Key, Monroe County, Florida, USA | Missing | Access |
| Belocephalus sleighti | Davis, 1914 | Keys short-winged conehead katydid | ? | Florida, USA | Missing | Access |
| Conocephaloides hawaiiensis | Perkins, 1899 | ? | Hawaiian Islands, USA | Missing or invalid (synonym) | Access | |
| Ephippiger camillae | Fontana & Massa, 2000 | Camilla's saddle bush-cricket | 1880 | Madonie Mountains, Sicily, Italy | Missing | Access |
| Evergoderes cabrerai | Bolívar, 1936 | Gran Canaria bush-cricket | 1960's | Barranco de Agaete, Gran Canaria, Canary Islands, North Africa | Missing | Access |
| Isophya boldyrevi | Miram, 1938 | Boldyrev's plump bush-cricket | 1915 | Russia | Missing | Access |
| Isophya lemnotica | Werner, 1932 | Limnos plump bush-cricket | (rediscovered) | Limnos (=Lemnos), Greece | Rediscovered | Access |
| Liara heteracanthus | (Redtenbacher, 1891) | (rediscovered) | Mizoram, India | Rediscovered | Access | |
| Lluciapomaresius panteli | (Navàs 1899) | Pantel’s saddle bush-cricket | (rediscovered) | Montsant range, southern Catalonia, north-east Iberian Peninsula | Rediscovered | Access |
| Namaquadectes irroratus | Péringuey, 1916 | Cederberg shieldback | (rediscovered) | Clanwilliam, Cape Province, South Africa | Rediscovered | Access |
| Neduba extincta | Rentz, 1977 | Antioch Dunes shieldback katydid | 1 July 1937 | Antioch Dunes, California, USA | Extinct | Access |
| Peringueyella zulu | Kaltenbach, 1971 | Zulu ambush katydid | 1922 | KwaZulu-Natal Province, South Africa | Missing | Access |
|
Platycleis kashmira |
Uvarov, 1930 | (rediscovered) | Jammu & Kashmir, India | Rediscovered | Access | |
|
Plicigastra himalayana |
Uvarov, 1924 | (rediscovered) | Kashmir & Punjab, India | Rediscovered | Access | |
| Rhacocleis trilobata | La Greca & Messina, 1974 | Three-lobed bush-cricket | 1973 | Peloponnesus, Greece | Missing | Access |
| Roeseliana oporina | (Bolívar, 1887) | Ghost meadow bush-cricket | (rediscovered) | Spain | Rediscovered | Access |
| Ruspolia remotus | (Walker, 1869) | Remote coneheaded katydid | ? | Hawaiian Islands, USA | Missing | Access |
| Steropleurus annae | (Targioni-Tozzetti, 1881) | Sardinian Saddle-backed Bush-cricket, Sardinian Saddle Bush-cricket | (rediscovered) | Sardinia, Italy | Rediscovered | Access |
| Tettigonia chinensis | Willemse, 1933 | (rediscovered) | China | Rediscovered | Access | |
| Thoracistus peringueyi | Pictet, 1888 | Peringuey's seedpod shieldback | pre-1880 | Lydenburg, Mpumalanga Province, South Africa | Missing | Access |
| Toledopizia salesopolensis | (Piza, 1980) | (rediscovered) | Brazil | Rediscovered | Access | |
| Uromenus riggioi | La Greca, 1964 | Riggio's saddle bush-cricket | 1970 | Sicily, Italy | Missing | Access |
| Zeuneriana marmorata | (Fieber, 1853) | Adriatic marbled bush-cricket | (rediscovered) | Italy & Slovenia | Rediscovered | Access |
Family: Thericleidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Acanthothericles bicoloripes | Descamps, 1977 | Morogoro pretty grasshopper | 1939 | Morogoro, Tanzania | Missing | Access |