-13- . 
the '"briobia 'mite." ■.',-.■'..• 
Hamilton (59) in 1934,- 'Pfteri describing., the Aerna^e done by the clover 
mite, ( Br yob i f. prat ensis ' ' G-arman) • ' By pr^eticsa Koch, stated that sprays containing 
the active principle of derri's' ro*ot are- effective. The diluted enray should 
contain 0.0025 nercent of roten^ne plus the other constituents, of derris root. 
If the spray contains little or no wetting agent it may be advisable to add : 
sufficient soap to make about' 0.5 percent- ; of soap in the diluted spray. 
Ordinarily 1 ounce, of pondered soao or 2.5 ounces of a 40-p'ercent liquid soap 
to 2 gallons of the diluted spray will give good results. 
Ke o t e tr anychus buxi Garman • . " ■• : 
Ivies ( 127 ) in 1935 -reported that Black -Arrow Bust, Red Arrow, Cubcr, and 
Cubor Bust had no effect on boxwood plants and that 'these dusts killed this 
mite as follows*.' ■ '■■'•■■■■ 
Material " '• Mortality 
' . . . , ■■ ,: Adults (24- hours); Eggs (10 days) 
Black Arrow 
H e d- Arrow ( 1:100) 
Cubor • 
Cubor Bust 
Percent . 
Percent 
98.4 
28 
93.3 
19 
95.0 
27 
97 
25 
Paratetranychus simolex Banks, the date mite 
Bowscn (54) in 1935 reported the results of trials of sulfur, lime-sulfur, 
petroleum, derris, derris + sulfur, nyrethrum, '.nicotine, and other materials 
against date mites (apparently (Oligonychus ) Paratetranychus simplex Barks). 
From 5 to 10 8-year-old palms' of the Hallawi, variety ; were either dusted (l/2 to 
8 oz. per palm) -or sprayed (l gal. per palm). Only dusting sulfur killed all 
mites with one application, Berris does not control the mite, 
Paratetranychus bicolor Banks »-.,..'. 
'■ See Hamilton (69) under Bryobia praetiosa. on -p8f^e 13. 
Paratetranychus citri (McG>) 1 the citrus red mite . 
See Boyce snd Prendergast (14) under Tptranychus bimaculatus Harv.. on pegc 
24- 
Boyce (12) in 1925 reported the results of tests of various insecticides 
