snowy tree cricket การใช้

Does anybody know where snowy tree crickets, which obey Dolbear's Law, can be found?
Sheldon insists it is a snowy tree cricket while Howard maintains that it is a common field cricket.
The most carefully studied species for this purpose is the widely distributed snowy tree cricket, Oecanthus fultoni Walker, which may be white or pale green.
Dolbear did not specify the species of cricket which he observed, although subsequent researchers assumed it to be the snowy tree cricket, " " Oecanthus niveus " ".
The chirp of the snowy tree cricket cryptically broadcasts the temperature _ simply count the chirps in 13 seconds and add 40 for the reading in degrees Fahrenheit.