Acridinae

The grasshopper subfamily Acridinae, sometimes called silent slant-faced grasshoppers, belong of the large family Acrididae in the Orthoptera: Caelifera.

Description
In appearance, the species are often similar to those of the subfamily Gomphocerinae, with whom they share a slanted face. However Acridinae differ from Gomphocerinae in that they lack stridulatory pegs on their hind legs and thus, as the common name suggests, do not make sounds. The antennae of this species is flattened and sword-like, a trait also shared with some gomphocerines and also with the spurthroated grasshoppers (subfamily Cyrtacanthacridinae). They lack the posternal spine seen in the spurthroated grasshoppers and lubber grasshoppers (subfamily Romaleinae). Hind wings in this species range from nearly colorless to colorless.

Tribes and genera
The Orthoptera Species File lists the following:

Acridini
Auth.: MacLeay, 1821; distribution: widespread in warmer parts of the Old World & Australasia (partial list):
 * Acrida Linnaeus, 1758
 * Acridarachnea Bolívar, I., 1908
 * Cryptobothrus Rehn, 1907
 * Keshava (insect) Gupta & Chandra, 2017

Calephorini
Auth.: Yin, 1982; distribution: Africa, Europe, Indo-China; single genus:
 * Calephorus Fieber, 1853

Gymnobothrini
Auth.: Uvarov, 1953 - Africa
 * 1) Brachybothrus Popov, 2019
 * 2) Chirista Karsch, 1893
 * 3) Comacris Bolívar, 1890
 * 4) Coryphosima Karsch, 1893
 * 5) Guichardippus Dirsh, 1959
 * 6) Gymnobothrus Bolívar, 1889
 * 7) Hulstaertia Ramme, 1931
 * 8) Keya (insect) Uvarov, 1941
 * 9) Malcolmburria Uvarov, 1953
 * 10) Oxybothrus Uvarov, 1953
 * 11) Rastafaria Ramme, 1931
 * 12) Roduniella Bolívar, 1914
 * 13) Tenuihippus Willemse, 1994
 * 14) Zacompsa Karsch, 1893

Hyalopterygini
Auth.: Brunner von Wattenwyl, 1893; distribution: Americas
 * 1) Allotruxalis Rehn, 1944
 * 2) Cocytotettix Rehn, 1906
 * 3) Eutryxalis Bruner, 1900
 * 4) Guaranacris Rehn, 1944
 * 5) Hyalopteryx Charpentier, 1845
 * 6) Metaleptea Brunner von Wattenwyl, 1893
 * 7) Neorphula Donato, 2004
 * 8) Orphula Stål, 1873
 * 9) Parorphula Bruner, 1900
 * 10) Paulacris Rehn, 1944

Pargaini
Auth.: Uvarov, 1953 - Africa
 * 1) Acteana Karsch, 1896
 * 2) Machaeridia Stål, 1873
 * 3) Odontomelus Bolívar, 1890
 * 4) Parga (insect) Walker, 1870
 * 5) Phryganomelus Jago, 1983

Phlaeobini
Auth.: Brunner von Wattenwyl, 1893 - Africa, Middle East, Asia


 * genus group Afrophlaeoba Jago, 1983
 * 1) Afrophlaeoba Jago, 1983
 * 2) Brachyphlaeobella Jago, 1983
 * 3) Chlorophlaeobella Jago, 1983
 * 4) Chokwea Uvarov, 1953
 * 5) Chromochokwea Jago, 1983
 * 6) Paralobopoma Rehn, 1914
 * 7) Parodontomelus Ramme, 1929
 * 8) Platyverticula Jago, 1983
 * genus group Duronia Stål, 1876
 * 1) Duronia Stål, 1876
 * 2) Duroniella Bolívar, 1908
 * 3) Leopardia Baccetti, 1985
 * 4) Oxyduronia Popov, 2019
 * genus group Ocnocerus Bolívar, 1889
 * 1) Anacteana Popov, 2019
 * 2) Hyperocnocerus Uvarov, 1953
 * 3) Ocnocerus Bolívar, 1889
 * 4) Panzia Miller, 1929
 * 5) Rhabdoplea Karsch, 1893
 * 6) Sumba (grasshopper) Bolívar, 1909


 * genus group not determined:
 * 1) Calliphlaeoba Ramme, 1941
 * 2) Cannula Bolívar, 1906
 * 3) Chlorophlaeoba Ramme, 1941
 * 4) Culmulus Uvarov, 1953
 * 5) Glyphoclonus Karsch, 1896
 * 6) Holopercna Karsch, 1891
 * 7) Mesophlaeoba Kumar & Usmani, 2015
 * 8) Oxyphlaeoba Ramme, 1941
 * 9) Oxyphlaeobella Ramme, 1941
 * 10) Paraphlaeoba Bolívar, 1902
 * 11) Phlaeoba Stål, 1861
 * 12) Phlaeobacris Willemse, 1932
 * 13) Phlaeobella Ramme, 1941
 * 14) Phlaeobida Bolívar, 1902
 * 15) Pseudophlaeoba Bolívar, 1914
 * 16) Pyrgophlaeoba Miller, 1929
 * 17) Sikkimiana Uvarov, 1940
 * 18) Sinophlaeoba Niu & Zheng, 2005
 * 19) Sinophlaeobida Yin & Yin, 2007
 * 20) Xerophlaeoba Uvarov, 1936
 * 21) Zygophlaeoba Bolívar, 1902

Truxalini
Auth.: Serville, 1838
 * 1) Acridarachnea - monotypic A. ophthalmica Bolívar, 1908
 * 2) Chromotruxalis Dirsh, 1950
 * 3) Oxytruxalis Dirsh, 1950
 * 4) Truxalis Fabricius, 1775
 * 5) Truxaloides Dirsh, 1950
 * 6) Xenotruxalis Dirsh, 1950 - monotypic X. fenestrata (Ramme, 1929)

Genera incertae sedis

 * 1) Aeropedelloides Liu, 1981
 * 2) Anaeolopus Uvarov, 1922
 * 3) Bababuddinia Bolívar, 1917
 * 4) Bambesiana Koçak & Kemal, 2008
 * 5) Brachyacrida Dirsh, 1952
 * 6) Calliphlaeoba Ramme, 1941
 * 7) Capulica Bolívar, 1917
 * 8) Carinacris Liu, 1984
 * 9) Carliola Uvarov, 1939
 * 10) Chromacrida Dirsh, 1952
 * 11) Closteridea Scudder, 1893
 * 12) Cohembia Uvarov, 1953
 * 13) Conuacris Willemse, 1932
 * 14) Covasacris Liebermann, 1970
 * 15) Dorsthippus Donskoff, 1977
 * 16) Duroniopsis Bolívar, 1914
 * 17) Eoscyllina Rehn, 1909
 * 18) Epacromiacris Willemse, 1933
 * 19) Euprepoptera Uvarov, 1953
 * 20) Euthynous Stål, 1877
 * 21) Julea Bolívar, 1914
 * 22) Kaloa (insect) Bolívar, 1909
 * 23) Lemuracris Dirsh, 1966
 * 24) Lobopoma Karsch, 1896
 * 25) Luzonica Willemse, 1933
 * 26) Megaphlaeoba Willemse, 1951
 * 27) Neophlaeoba Usmani & Shafee, 1983
 * 28) Nimbacris Popov & Fishpool, 1992
 * 29) Nivisacris Liu, 1984
 * 30) Orthochtha Karsch, 1891
 * 31) Oxyolena Karsch, 1893
 * 32) Oxyphlaeoba Ramme, 1941
 * 33) Palawanacris Ramme, 1941
 * 34) Pamacris Ramme, 1929
 * 35) Paracoryphosima Descamps & Wintrebert, 1966
 * 36) Paraduronia Bolívar, 1909
 * 37) Paraphlaeoba Bolívar, 1902
 * 38) Paraphlaeobida Willemse, 1951
 * 39) Pasiphimus Bolívar, 1914
 * 40) Perella (insect) Bolívar, 1914
 * 41) Phlocerus Fischer von Waldheim, 1833
 * 42) Phorinia (insect) Bolívar, 1914
 * 43) Plagiacris Sjöstedt, 1931
 * 44) Pseudoeoscyllina Liang & Jia, 1992
 * 45) Pseudopargaella Descamps & Wintrebert, 1966
 * 46) Pseudoptygonotus Zheng, 1977
 * 47) Ruganotus Yin, 1979
 * 48) Rugophlaeoba Willemse, 1951
 * 49) Shabacris Popov & Fishpool, 1992
 * 50) Sherifuria Uvarov, 1926
 * 51) Urugalla Uvarov, 1927
 * 52) Vietteacris Descamps & Wintrebert, 1966
 * 53) Vitalisia Bolívar, 1914
 * 54) Weenenia Miller, 1932
 * 55) Wellawaya (insect) Uvarov, 1927
 * 56) Xenocymochtha Popov & Fishpool, 1992
 * 57) Xenoderus Uvarov, 1925
 * 58) Yendia Ramme, 1929
 * 59) Zambiacris Johnsen, 1983
 * 60) Zygophlaeoba Bolívar, 1902

Genera sometimes or formerly placed here

 * Achurum and Mermiria (otherwise in Gomphocerinae)
 * Gastrimargus (otherwise in Oedipodinae).
 * the tribe Parapleurini (containing Stethophyma) is now placed in Oedipodinae.