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Infraorder Tettigoniidea - Katydids, Camel Crickets, and relatives

50013743 meadow grasshopper - Orchelimum nigripes - male Giant Grasshopper - Neobarrettia spinosa Katydid - Amblycorypha oblongifolia - male Conocephalus saltans - male black-legged meadow katydid - Orchelimum nigripes - male Shield-back Katydid - Ateloplus Oblong-winged Katydid - Amblycorypha oblongifolia - male Red Eyed Devil - Neobarrettia spinosa - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Orthoptera (Grasshoppers, Crickets, Katydids)
Suborder Ensifera (Long-horned Orthoptera)
Infraorder Tettigoniidea (Katydids, Camel Crickets, and relatives)
Synonyms and other taxonomic changes
First use of name as infraorder Tettigoniidea is in - Kevan, D.K.M. 1982. In Parker. 'Synopsis and Classification of Living Organisms' 2:356
Remarks
It is probable that three phylogenetically natural divisions of Tettigoniidea can be made. These would be (with only North American families listed under each):

superfamily Tettigonioidea including family Tettigoniidae
superfamily Rhaphidophoroidae including family Rhaphidophoridae
superfamily Stenopelmatoidea including families Anostostomatidae, Gryllacrididae, Prophalangopsidae, and Stenopelmatidae,

The Rhaphidophoroidae may deserve full "infraorder" status, though this seems uncertain. Currently pulbished classifications of the Ensifera, and of the families included in the tradtional infraorder Tettigoniidea, are often in conflict; with each new publication tending to contradict elements of previous. Therefore, only the infraorder Tettigoniidea is recognized here, only for convenience, and with no further formal subdivision above the family ranking.

See further comments under suborder Ensifera.