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Antes tia orbitalis (Westw, ), a variegated coffee bug 
Le Pelley (57) in 1935 reported effective control of the coffee 
bugs A. orb italis van lineati col lips Stal and Lygus" simo ny i Reut, by 
spraying with a kerosene extract of pyrethrum, using IOC gm. of pyrcthrum 
powder (pyrethrin content, 1.25 percent per liter). The spray was 
applied with a small hand atomizer at the rate of 20 cc. of extract per 
tree, and the spraying was done under a cloth cover. 
Attempts were made to extract the toxic principles of Teph r osia 
vogelii and tobacco, in paraffin oil, in a similar simple method 
suitable for use on the plantation. It was found that the extracts pre- 
pared from 4-00 gm. of leaves and from 500 gm. of pulverized tobacco, 
each in 1 liter of paraffin oil, were only slightly toxic. A fairly 
large proportion of the insects present were brought down fro.-; the trees, 
but a very large percentage recovered. Laboratory trials showed that 
the extracts prepared from Te phrosia and tobacco, although not completely 
lacking in insecticidal properties, were so inferior to the ■nyrethrum 
extracts as to be hardly comparable by the methods used. 
[According to K. G. Barber, orbitalis and lineaticollis are 
different species of the genus Antestia, the proper name for the varie- 
gated coffee bug being A. orbitalis (TFestw. ).] 
Antestia sp. 
Yvbrsley ( lOO ) in 1934 reported that when tested in the laboratory 
sprays made by extracting Tep hrcsia vogelii seeds vdth paraffin til at 
the rate of 2 pounds per gallon were equal in effect to pyrethrum extracts 
of l/2 to 1 pound per gallon. 
Bagrad a hilar is (Burm. ), the Bagrada bug 
Gunn (35) in 1918 reported that both nymphs and adi^lts of the 
Bagrada bug, feeding en cruciferous plants in South Africa, can be destroye 
by spraying with ordinary Katakilla (a derris preparation), 1 pourd to 7 
imperial gallons of water, or with a special Katakilla at the rate of 1 
pound to 8 imperial gallons of water. 
Chlorcchroa sayi Stal, the Say stinkbug 
Gas sidy and Barber (10) in 1935 reported that cube dust ^illed none 
of these insects, and derris dust (the best of seven materials tested) 
;ave a control of only 2c percent. Tests were made by dusting caged cotton 
plants in the field and branches of ccttcn enclosed in lantern globes in 
the insectary. In 1936 these same authPrs reported uc the chief of the 
Division of Cotton Insect Investigations of the Bureau that in plat tests, 
cube was less effective (45.2 percent control) than derris (62.8 percent 
control ) . 
Coptoscma siamicum 'falk. (C. pygmaeum Mont. ) 
Van der Vecht ( 90 ) in 1936 reported that this insect was easily 
killed by spraying, but attempts to control it by dusting have met with 
failure. 
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