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Lacebugs, or Tingitids (Tingitidae) 
Pear lacebug, — The bug Stephajiitis Pyri ( F, ) v/as the first insect to 
be treated with nicotine, the dete ancfpTace being 1690 in France, It is a 
serious pest of pear trees ir. Europe. In France tobacco fumes and nicotine 
sprays were used; <Ln Germany tobacco leaves were burned beneath the trees 
and nicotine solutions wore used; in Sweden tobacco extracts were found 
successful; in Italy phenolated tobacco extracts with soap were recommended; 
and -in Russia both spraying and dusting with nicotine were successful. 
Rhododendr on^ l ac ebu g ,-»Thi s insect, Stephanitis rhododendri (Horv, ), 
appears to be an important pest in Holland and France, where nicotine in 
various forms Tvas recommended against it, 
Other tingitids .—Nine other tingitids v/ere tested once, and nicotine 
v/as unsatisfactory against three of them. 
Chinch Dug and Other Lygaeids (Lygaeidae) 
Since 1913 nicotine has been applied against the chinch bug ( Blissus 
leucopterus (Say)) in the United States and Canada. Black Leaf 40 and soap, 
nicotine oTeate and soap, and nicotine sulfate dusts v/ere the forms mostly 
used. 
Eight other lygaeids were tested, but the records about them are meager. 
Squash Bug and Other Coreids (Coreidae) 
Nicotine has been applied against the squash bug (Anas a tristis (Deg.)' 
since- 1915 in the United States. It kills only the nymphs, particularly the 
young ones. One writer recommended 40-percent nicotine sulfate (1 to 600) 
or a 10-percont Nicodust, whereas another writer said a 3-peroent nicotine 
dust cr spray should be used. 
Three other coreids are mentioned but there is little information 
about tli em, 
Pentatomid Bugs (Pentatomidae) and other Hpteroptera 
Under this heading nine species are mentioned, but no definite state- 
ment has been made about nicotine being effective against them. 
in, ?;iysauo?tera, of thpjps 
Cjiijo^i juries, — Since 1G98 this species, Thrips tfbaci Lind. , has been 
controlled wita nieoxine* It was treated in the V ■.,/•■- ; .tes, Fweden, 
Australia, Canada;, Earhados, Bermuda, Germany, .: ..n Maurice, 
Crimea, and Fn gland. Nicotine sprayc v/ere mostly usee! and vzsc usually 
effective-, Hicotine dusts and nicotine tannate v:ere aiso emu' eyed, 
Greonhouse thrips ,-~This species, H eliothrip s haepyo it hoidalis (Bouche), 
has been coLxricUleaTsi nc e 1868 with tobacco products". It v/as treated in 
France, Germany, Luxembourg, the United States, Argentina, Sweden, Belgium, 
Brazil, and Italy, 
