As you drive around the Oklahoma City Metro you may have noticed a large number of small mounds in grassy areas. Perhaps, you have them in your own yard. This year at my house I even have them in my flower beds. What you are observing is the work of the shorttailed cricket. The mounds can be differentiated from ant hills in that with ant hills the soil will be very granular (like sugar), whereas the cricket mounds will be much coarser.
These crickets are similar to field crickets except for the short ovipositor from which they get their name shorttailed. They are light brown in color with a body length of about ? of an inch. They shed their hindwings soon after becoming adults and never fly. Do not confuse these crickets with the brown field cricket. The brown field cricket is the home invading nuisance that enjoys filling the night with its songs.