| Acridoidea | |
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| Miramella alpina | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Orthoptera |
| Suborder: | Caelifera |
| Infraorder: | Acrididea |
| Informal group: | Acridomorpha |
| Superfamily: | Acridoidea MacLeay, 1821[1] |
| Families | |
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See Classification. | |
| Synonyms | |
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Acridoidea is the largest superfamilyofgrasshoppers in the order Orthoptera with species found on every continent except Antarctica.[2]
Orthoptera Species File includes the following families:[2]
Among the families Acrididae, Ommexechidae and Romaleidae there is reported to be chromosomal stability with a high frequency of species harbouring diploid number (2n) of 23♂/24♀ chromosomes.[3][4] In species of Acrididae and Romaleidae it is common to have acrocentric chromosomes with a fundamental number (FN), i.e. number of chromosome arms, of 23♂/24♀.[4] However, chromosomal rearrangements are frequently found as deviations from the standard acrocentric karyotype. In the subfamily Ommexechinae most species show a unique karyotype (2n = 23♂/24♀, FN = 25♂/26♀) due to the occurrence of a large autosomal pair (L1) with submetacentric morphology.[4] There is some support for 'Mesa's hypothesis' of an ancestral pericentric inversion in the ancestor of Ommexechinae to explain this karyotype variation.[5][6][4][7]
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Extant Orthoptera families
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| Acridoidea |
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