A survey is currently underway to determine if red mites in South Texas are affected by either of these diseases. This line of research could have an important bearing on future strategies for red mite control. Table 1 . Number of red mites found on leaves of citrus trees of various ages and types in the Lower Rio Grande Valley of Texas, 1980. Fig.3 Shaded areas represent locations where red mite infested orchards have been identifed.
Squares are major towns.
The authors thank Mr. Santiago Villarreal and Mr. David I. Ramos for technical assistance. Spotting of grapefruit associated with false spider mites. J. Rio Grande Valley Hort. Ebeling, W. 1959. Subtropical fruit pests.