| length of antennae |
less than 30 segments and shorter than body (exception: 3 species of Tanaoceridae from southwestern US and northern Mexico, cf. image)
| many more than 30 segments (except for 4 species of Cooloolidae from Australia), usually longer than body (additional exception: Gryllotalpidae - mole crickets, cf. image)
|
| ovipositor of females |
| not elongate | usually elongate and easily visible (in Schizodactylidae very small) |
| auditory organs |
| if present, on first abdominal tergite | if present, on foretibiae (2 tympana or ear openings below the knee) |
