-eo- 
Coooua hesperldum L. # the soft scale 
Coocua psoudohesperidum (Ckll.) 
Diaspis bolsduvalil Sign. 
Same as for Chrysomphalus diotyospermi (Morg.) .— Cory (119 ) . 
Lepidosaphes floifoliae (Berlese), a fig scale 
Field tests with DDT residual spray to control crawlers were un- 
suooessful in all but one doubtful case where a talc powder containing 
20 percent of DDT was applied at 4 pounds per 100 gallons of water plus 
1/4 percent heavy-medium soluble oil on July 17. It is not known what 
control a 1-percent heavy-medium oil spray would give if it were applied 
along in July,— Stafford (327) • 
Lepidosaphes fious (Sign.), the fig scale 
Same as for Chrysomphalus aonldum .— Baker and Porter (81). 
Lepidosaphes tuber cu la tus (Sign.) 
Same as for Chrysomphalus dictyosperroi (Morg.) .--Cory (119 ) • 
Lepidosaphes ulni (L«), the oystershell soale 
DDT is not effeotive against the adult scales, but is effective 
against the orawlers or migrating young.— Annand (74). 
Par la tor ia chin ens is Marlatt 
i « ■ ■ i ■» i - . -m m 
The addition of DDT to oil sprays improved the immediate kill but 
had no residual effect on tne crawlers.— Baker and Porter (81) . 
Parlatoria oleae (Colvee), the olive scale 
Tests were conducted in the laboratory and in the field with a 
hand sprayer and a power-driven sprayer using a 20 percent DDT wet table 
powder and DDT dissolved in oils. In none of the tests conducted were 
the results satisfactory for commeroial practice. Control of olive 
soale always increased with viscosity and concentration of oil regardless 
of concentration of DDT. Even fresh deposits of DDT did not prevent 
many orawlers from settling and reaching the second instar. The use of 
DDT seems, therefore, to offer no solution to the problem of controlling 
olive scales that settle under their mothers 1 shells.— Stafford (327). 
