Acridoidea | |
---|---|
Miramella alpina | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Orthoptera |
Suborder: | Caelifera |
Infraorder: | Acrididea |
Informal group: | Acridomorpha |
Superfamily: |
Acridoidea MacLeay, 1821 [1] |
Families | |
See Classification. | |
Synonyms | |
|
Acridoidea is the largest superfamily of grasshoppers 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]
Acridoidea | |
---|---|
Miramella alpina | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Orthoptera |
Suborder: | Caelifera |
Infraorder: | Acrididea |
Informal group: | Acridomorpha |
Superfamily: |
Acridoidea MacLeay, 1821 [1] |
Families | |
See Classification. | |
Synonyms | |
|
Acridoidea is the largest superfamily of grasshoppers 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]