ORTHOPTERA (grasshoppers, crickets, katydids). Orthoptera Number of Species Common names Distinguishing characteristics Other features Typical habitats.

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Presentation transcript:

ORTHOPTERA (grasshoppers, crickets, katydids)

Orthoptera Number of Species Common names Distinguishing characteristics Other features Typical habitats Hexapod Orders 23,000 Grasshoppers, locusts, crickets, katydids Ortho - straight, ptera - wing - vegetation, worldwide -ovipositor -saltatorial hind legs -first group to use sound in communication

Orthopteran Phylogeny

Fossil Crickets & grasshoppers

Characteristics of Orthoptera 1. Chewing Mouthparts

Characteristics of Orthoptera 2. Saltatorial Hind Legs

Two Suborders of Orthoptera 1. Caelifera - Grasshoppers -diurnal, jumping - short antennae - terrestrial (not arboreal) - nocturnal, walking - long antennae - arboreal 2. Ensifera - katydids, crickets

Sound Production Ensifera

Sound production - stridulation

Sound production - habitat modification

Sound Reception Ensifera

Ensifera - hearing

Sound Production Caelifera

Sound Reception Caelifera

Sound Reception

Orthoptera - Camouflage Caelifera

Ensifera - Camouflage/Mimicry

Orthoptera - Camouflage Ensifera

Ensifera - Nutrients to Female

Inject male with radioactive protein Spermatophore takes up radioactive protein Spermatophore passed to female Eggs contain radioactive protein Does the female get the nutrients?

Ensifera - Nutrients to Female Amount of spermatophylax eaten Protein in dietFemale size Egg size % surviving Number of eggs Son: length of time as a juvenile Daughter: length of time as a juvenile Son’s size Spermatophylax size Number of eggs Daughter’s size

Some representative Orthoptera Ensifera Hagloidea - grigs, Cyphoderris Gryllidae - crickets, mole crickets

Some representative Orthoptera Ensifera Stenopalmatidae - Jerusalem cricket & wetas Tettigoniidae - katydids

Some representative Orthoptera Caelifera Acrididae - Grasshoppers & locusts

Economic Importance Schistocerca gregaria - migratory locust SolitaryDispersing

Economic Importance Schistocerca gregaria - migratory locust SolitaryDispersing

Economic Importance Schistocerca gregaria - migratory locust

Locust outbreaks - Australia

Economic Importance