The Acrididae are the predominant family of grasshoppers, comprising some 10,000 of the 11,000 species of the entire suborder Caelifera. The Acrididae are best known because all locusts (swarming grasshoppers) are of the Acrididae. The subfamily Oedipodinae is sometimes classified as a distinct family Oedipodidae in the superfamily Acridoidea. Acrididae grasshoppers are characterized by relatively short and stout antennae, and tympana on the side of the first abdominal segment. Subfamilies The Orthoptera Species File (September 2021) lists the following subfamilies of Acrididae. The numbers of genera and species are approximate and may change over time. Acridinae MacLeay, 1821 (140 genera, 470 species), Worldwide: temperate and tropical Calliptaminae Jacobson, 1905 (12 genera, 90 species), Africa, Europe, Asia Caryandinae Yin & Liu, 1987 (3 genera, 100 species), Africa, Asia Catantopinae Brunner von Wattenwyl, 1893 (325 genera, 990 species), Africa, Asia ("spur-throated grasshoppers") Copiocerinae Brunner von Wattenwyl, 1893 (22 genera, 90 species), Central & South America Coptacrinae Brunner von Wattenwyl, 1893 (20 genera, 110 species), Africa, Madagascar, tropical Asia Cyrtacanthacridinae Kirby, 1910 (38 genera, 170 species), Worldwide ("bird grasshoppers") Egnatiinae Bey-Bienko & Mistshenko, 1951 (30 species), Africa to central Asia Eremogryllinae Dirsh, 1956 (5 species), North Africa Eremogryllus Krauss, 1902 Notopleura (grasshopper) Krauss, 1902 Euryphyminae Dirsh, 1956 (23 genera, 80 species), Africa including Madagascar Eyprepocnemidinae Brunner von Wattenwyl, 1893 (26 genera, 150 species), Africa, mainland Europe, Asia Gomphocerinae Fieber, 1853 (192 genera, 1200 species), Worldwide Habrocneminae Yin, 1982 (15 species), China, Indochina Habrocnemis Uvarov, 1930 Longzhouacris You & Bi, 1983 - China only Menglacris Jiang & Zheng, 1994 (syn. Tectiacris Wei & Zheng, 2005)- China Hemiacridinae Dirsh, 1956 (45 genera, 180 species), Africa, Asia Incolacridinae Tinkham, 1940 (4 genera), East Asia Leptysminae Brunner von Wattenwyl, 1893 (21 genera, 70 species), Central and South America Marelliinae Eades, 2000 (monotypic, 1 species), South America Marellia Uvarov, 1929 Melanoplinae Scudder, 1897 (146 genera, 1100 species), Americas, Eurasia Oedipodinae Walker, 1871 (138 genera, 790 species), Worldwide Ommatolampidinae Brunner von Wattenwyl, 1893 (115 genera, 290 species), South America Oxyinae Brunner von Wattenwyl, 1893 (33 genera, 210 species), Sub-Saharan Africa, Asia, Australasia Pauliniinae Hebard, 1923 (monotypic, 1 species), South America Pezotettiginae Brunner von Wattenwyl, 1893 (10 species), Europe, western Asia, Middle East Proctolabinae Amédégnato, 1974 (29 genera, 210 species), Central and South America Rhytidochrotinae Brunner von Wattenwyl, 1893 (20 genera, 40 species), South America Spathosterninae Rehn, 1957 (single tribe, currently with 3 genera and 12 species), Africa, Indomalaya, Australia