Crickets
This common name refers to only one family.
These are pretty much always called Crickets.
Terrestrial (Terrestrial: Insects which live on land and are fed on by trout only when they incidentally fall into the water are known as "terrestrials" to fly anglers, and they're very important in late summer.) crickets are not found in trout streams nearly as often as grasshoppers, but fly shops still sell imitations and trout still take them eagerly.