- 102 - - 
Curculionidae (unidentified sp.) . • ■ . ; 
T-eotony 1 potmd- in -2'-^ inp''^ri"^,l-:gallons of water killed SO: percent of 
adult arrovrliead "bud vccvils; 1 pon.nd in 32 imp .-rial, gallon '^ of vrater kill<=d 
UO percent. — In?^titute of P-iypical ond Chemical Research ( 220 ) in 192?. 
Derrisol plus oil (Vordol) was not so effocti^^e ^s lead arsenate against 
the curculio. — Farrar ( 118 ) .in-:1930., , ■■ 
The- Uni-ted -.-S tn, t^ s- Deparfmcnt .o f Agr i cul ture , Bureau of Ent omology ■ and 
Plant (Quarantine {^21) ^^ ^'^'3^ reported that" curculio control resulting from 
the us-e of a full schedule of derris powder was considcra'bly inferior to that 
obtained "by the use of lead arsenate. 
■V ■• ■ '-■ . , ■. •: Demestldae -■ - : 
Anthrenup ?crophulariae (L,), the carpet beetle 
Back (22j_ in 1932 stated that when rotenone dissolved in acetone was 
a^^plied to 'fft'lDrics in laboratory te'stf? it imparted a real nioth, resistance. 
A m:ijnbcr of mothproofing solutions now on the market .contain rotenone. Back 
report f-d using rotenone on carpet beetles with consistently good results', 
^nd -exhibited S'amplds (if treated and' untreated cloth to the subcomnittee of 
the Hcuse Committee on Appropriations. . ' ■ , ■■' 
Anthrenus vcrbasci (L,), the varied carpet' beetle ■ . . ■ ' .' : 
•' • Yamada "( Uiy ) in "1937 ^reported- that clothes treated x>rith rot'-^none (l 
ounce 'to 25 pounds of ; cloth, wcl^t'-) wojre not attacked by larv^^^e of ."this insect. 
Anthrrmxs vorax Watorh. 
Attp.genus piceus (Oliv.), the blnck carT)et beetle 
Bac'-, Cotton, and Roark {2V) in iq;^0 rrport'^d that acetone containing 
only 0,05 pf'rcent of rotenon-- . gave excellent -protc^cti on -to .vfoolf'n goods 
thoroughly impregnated .with the solution,- against; the- s^e species, Rotenone 
appears to coual an^; Torotirietar" mothproofing solution now offered the public 
in imparting moth rcsrifstance to fabrics-. -This work .Vras, Referred to by -the 
United Stater, Department of Agriculture, Burem^ of j^ntomology (ll5) i'-^ ^^^ 
annual'Teport fo2* -1930, ■'.'•• '■■'', - - -. •,- 
Derme'^tes lard^riu^^ L, , the larder beetle 
Th-r lar-"-a i^ su^c - ptiblo to derri^, but thr eff' ct is v- ry '-,lio;ht.^ — •" 
Craufurc'.-Benson (90) . in l^'^B.-'\ ■ 
.DermO'^. tes ' vu-lr^ir-us 4 . , th*^ 'hide bc'Otle • ■ ..,.,,, 
T'-'G larva if. suscciotible to ■ derris but the effect is very slight.- — ' 
Cr^^r^furd-Benson .(^) in-193g.- :, , -. ■'. 
