Which key should I use?

In most cases, if the specimen has wings at least half the length of the abdomen, it is an adult, and the adult key should be used.

If the wings are lacking or the wings are small and/or pad-like, the nymphal key should be used. However, some grasshopper species lack wings in the adult stage, so these adults may be confused with nymphs.

Adults of the grasshopper species listed below may be confused for nymphs.

Aeropedellus clavatus male and female

Boopedon nubilum female

Brachystola magna male and female

Campylacantha olivacea male and female

Chorthippus curtipennis female

Dactylotum bicolor male and female

Hesperotettix speciosus male and female

Hypochlora alba male and female

Melanoplus dawsoni male and female

Melanoplus lakinus male and female

Oedaleonotus enigma male and female

Paropomala wyomingensis male and female

Phoetaliotes nebrascensis male and female

Pseudopomala brachyptera female