Not available – first paragraph follows: In sampling for spider mites on cotton, time limitations are important, especially when Tetranychus cinnabarinus (Boisduval) populations can reach levels exceeding tens of thousands per plant. Counting all Tetranychus spp. on a single cotton leaf often requires an hour or more. Consequently, few researchers or pest control advisors take the time for careful sampling.

The authors thank the following for their assistance: Dr. John T. Trumble, Dr. Gregory P. Walker, Ralph M. Hannibal, and Sankung Sagnia.