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Briophyidae 
(Bpitrlmerua ) Abaoarus hystrix (Nal.), the grain rust mite 
Rotenone duat was not effeotive against this mite on timothy. 
—-Pepper ( 459 ) • 
Epitrimerus vitis (Nal.), a gall mite 
Three peroent of Selinon was more effective against this mite 
on grape vines in Germany than light oil in combination respectively 
with nicotine, pyrethrum. or derris .--Jancke (315 ) . 
(Eriophyes ) Cecidophyes rlbis (Nal.), the currant bud mite 
A post-blossom spray of derris and soap did not injure the black 
currant in England and was less effective against this mite than a 
preblo8som application of 2 peroent of lime sulfur*— Montgomery and 
coworkers (421) • 
(Eriophyes ) Aceria sheldoni (Ewing), the citrus bud mite 
The most effective combinations of powdered rotenone-bearing roots 
with light-medium oil (3/4 to 1 percent) were two-thirds as effective as 
the same oil (1-2/3 percent) used alone.- Boyoe and coworkers (81, 82). 
Ixodidae 
Amblyomma maculatum Koch, the Gulf Coast tick 
Studies of this tick were made to find a substitute for rotenone. 
— U. S. Bureau of Entomology and Plant Quarantine (628 , p. 144). 
Dermacentor albiplctus (Pack.) , the winter tick 
Mopping the infested horses with a mixture of 2 ounces of finely 
ground derris (5 percent of rotenone), 2 ounces of neutral soap, and 
1 gallon of water will probably kill all the ticks with whioh the wash 
is brought in contact.— Bishopp (52). 
The standardized derris powder method was effective in controlling 
the winter tick. — Gunn (247 , 248 ). 
Dermacentor andersoni Stiles, the Rocky Mountain spotted fever tick, a 
wood tick 
For treatment use the derris dip reoommended for the American dog 
tick (D. variabilis ) .— Bishopp and Smith (57) . 
