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Byturidae 
Byturus tomentosua (Deg*), a raspberry and loganberry beetle 
Byturus rubl Barber or bakeri Barber ("unicolor Say), a raspberry 
Truitwora 
Three applications of derris, cube, or timbo, either as a dust 
or spray, were recommended as a control of the raspberry or logan- 
berry fruitworm (B. unleolo r) in Washington* The dust should con- 
tain not less than 0.5 percent of rotenone mixed with talo or 
diatomaoeous earth as a carrier* If a spray was to be used, 34 ounces 
of derris, cube, or timbo (4 peroent of rotenone) were required for 
eaoh 100 gallons* Rotenone was the only remedy recommended*— Hanson 
and Webster (260) • 
Rotenone is the standard or preferred insecticide for the rasp- 
berry fruitworm* Niootine is ineffective* — U* S* Bureau of Bitomology 
and Plant Quarantine (638) • 
Derris is particularly suitable for the control of the rasp- 
berry beetle*-- Freak (199) * 
Powdered derris or cube (4 to 5 peroent of rotenone) used at the 
rate of 3 to 5 pounds in 100 gallons of water wilii -J- to 1 pound of 
soybean meal or other neutral spreader, may be substituted for lead 
arsenate spray* A 1-percent rotenone dust was also effective against 
raspberry beetles in New York.— Slate and coworkers (644, p. 49). 
The raspberry fruit worm has been controlled fairly well by the 
use of rotenone*— U* S. Bureau of Batomology and Plant Quarantine 
(625 , p. 802). 
There is no comparable substitute for rotenone. Lead arsenate 
is of some value for early treatments but should not be used after 
the berry blossoms open.— U. S. Department of Agriculture (633, p. 16) « 
Cantharidae 
Cantharis obscure L* 
In France tests against this insect on fruit trees with sprays of 
niootine, rotenone, or pyrethrua, and dusts of talo containing 0*76 
peroent of rotenone from Derris elliptioa , and of a mixture of sulfur 
and lime, demonstrated that the best results were given by the rote- 
none dust*— Feytaud and Chaboussou (1 83 ) * 
