- 38-- 
and dusts regulated to give a deposit of 0.18 mg. of rotenone per 500 
cm. . eere not effective against last instars. 
DeBussy et al. (_£7) and also Van der Laan (244) in 1936 reported 
that this species is sensitive to derris dust. 
Klinger ( 237 ) in 1936 reported that rotenone spray and dust gave 
no mortality in 8 days. These tests were made on fourth instars in 
the laboratory. 
Kelsall and Stultz ( 234. ) in 1937 reported that derris-gypsum dutt 
(1 percent rotenone) caused no mortality ih 36 hours in laboratory 
tests. 
Fnnsen (l^l) in 193-9 reported that nearly full-grown larvae of 
this species were very resistant to derris. 
Lymantriidae (unidentified sp..), tussock moths 
The Institute of Physical and Che^ic^l Research ( 214 ), Tokyo, Jap, 
in 1927 reported that .Neoton is effective as a contact spray against 
the larvae. , 
The larve were not controlled satisfactorily by derris or cube 
powder in water to which rosin-residue emulsion had been added. — 
New Jersey Agricultural Experiment Station' (294) in 1938. 
,lgicide DC-4 (rotenone -0.6 percent) at the rate of 4 pounds per 
100 gallons of water (0.003 percent rotenone) killed from 50 to 100 
percent within 96 hours. — Agicide Laboratories (8) in 1939. 
Lyonetiidae 
Lyonotia cl erkella (L. ) • , ' 
Ahlberg (9.) in 1934 reported spraying, experiments in the labora-. 
tory, in which the materials tested included derris preparations used 
in 1-and 2-percent water solutions. Only 37 percent of the pupae in 
the leaves were ."billed. 
Oda(312) in "1934 reported that injury to 'peach trees by this 
species in southern Japan was minimized by spraying- with Neoton and 
nicotine sulfate, which are effective against the moths and the larvae, 
Fotodontidae 
Drymonia manleyi Lcc-ch 
Tanak' : : ( 4-00 ) in 1927 recommended a derris-soap spray for control 
of the older larvae. 
% 
hh-il r-x bu cop ha la (L.) 
The 1 irvie were used as test insects by Fryer et al. ( 14-9 ) in 
1923 in evaluating derris extracts. 
