• Neoptera
  • Polyneoptera [30-V]
    • Plecoptera
    • Embioptera
    • Zoraptera
    • Dermaptera
    • Phasmatodea
    • Mantophasmatodea
    • Grylloblattodea
    • Dictyoptera [30-VI]
      • Blattodea
      • Mantodea
    • Orthoptera
  • Paraneoptera [30-VIII]
  • Endopterygota [30-IX TO 30-XIII]

The suborder Caelifera contains grasshoppers and locusts. As of 2024, 519 species of Caelifera have been observed in iNaturalist in the US and 3,113 throughout the world.

• INFRAORDER ACRIDIDEA
  • ACRIDOMORPHA
    • SUPERFAMILY ACRIDOIDEA
      • FAMILY ACRIDIDAE
        • Spur-Throated Grasshopper (Melanoplus sp.) - 3 (Adirondacks)
        • Two-Striped Grasshopper (Melanoplus bivittatus) - 6 (Konza)
        • Differential Grasshopper (Melanoplus differentialis) - most iNat observations in the US for Caelifera - 6 (Prairie Garden Trust, SCZ)
        • Bird Grasshopper (Schistocerca alutacea) - Kansas
        • Say's Grasshopper (Spharagemon equale) - 6 (Tallgrass Prairie)
        • Grasshopper (Trimerotropis) - 6 (RMNP)
      • FAMILY ROMALEIDAE
        • Plains Lubber Grasshopper (Brachystola magna) - 6 (Tallgrass Preserve)
    • SUPERFAMILY EUMASTACOIDEA
    • SUPERFAMILY PAMPHAGOIDEA
    • SUPERFAMILY PNEUMOROIDEA
    • SUPERFAMILY PROSCOPIOIDEA
    • SUPERFAMILY PYRGOMORPHOIDEA
    • SUPERFAMILY TRIGONOPTERYGOIDEA
  • SUPERFAMILY TETRIGOIDEA
• INFRAORDER TRIDACTYLIDEA - Sand Crickets

• INFRAORDER GRYLLIDEA
  • SUPERFAMILY GRYLLOIDEA
    • Red-Headed Bush Cricket (Phyllopalpus pulchellus) - most iNat observations in the US for Ensifera
  • SUPERFAMILY GRYLLOTALPOIDEA
• INFRAORDER TETTIGONIIDEA
  • SUPERFAMILY HAGLOIDEA
  • SUPERFAMILY RHAPHIDOPHOROIDEA
  • SUPERFAMILY SCHIZODACTYLOIDEA
  • SUPERFAMILY STENOPELMATOIDEA
  • SUPERFAMILY TETTIGONIOIDEA
    • FAMILY TETTIGONIIDAE
      • Lesser Meadow Katydid (Conocephalus)
      • Robust Conehead (Neoconocephalus robustus)
      • Scudder's Bush Katydid (Scudderia)