- gU - • 
Ccccir.ellidae (unidentified spp,), ladyteetles/.^^.'^ ' 
McIndQ,o and Sievers (265) in 192U reported ;'derri<? powder u<;ed as 
a funigaht ("burned) to be effective against the ladybeetle tested. 
Derris powder, 1,5 pounds per ICQ i.-nperial gallons of v^ater plus 
soap, killed the larvae.— Kel sail et al. (2^).in 1Q26. 
• Killed "by a derris-gyosuni dust (O.U percent of rotenone), — Herman 
and Eockey (IS^) in 1936. 
Butac (62) in IQ3S, in dusting cotton with a 50:50 mixture (by 
weight) of o.erris and gavrgavr for the control of the spotted bollworm, 
noticed that all ladybird beetles were dead within 6 hours of the applica- 
tion. 
Garman (152.) ^^"^ l^'^iS stated th?t derris and cube have been shown 
to be destructive to ladybeetles. 
- Garman and Townsend ( 160 ) _ in 19*^8 reported that derris powder :(U 
percent of rotenone) at U p'ounds per 100 gallons of water killed ?2 per- 
cent of ladybeetles. This observation was made v^hen testing derris- for 
the control of the European red mite in apple orchards in Connecticut. 
The Kev/ Jersey Agricultural Experiment Station (208) in 193^ reported 
that derris-root dusts destroyed "a large niomber of ladyb'eetles, whi'cli 
are natural enemies of the pea aphid. 
An anonymous Of) writer in the Palestine Gazette in 193'-^ stated 
that 12-spotted ladybeetle adults are easily destroyed' by derris dusts. 
The larvae are not so much affected by it, but if well coated by the 
derris dust they also perish very soon. A 50-^50 mixture of pure barium 
or sodiu'i fluosilicate aJid derris dust should effectively protect cucurbits 
against attacks of the ladybeetle' pnd itp larvae, provided the whole mix- 
ture contains 0.75 percent of rotenone. 
Colydiidae 
Bothrideres (?) andre\/esi Grouv. 
Feeds on derris roots in storage. — Corbett (8_6) in 1931* 
Crypt ophagidae 
Atoma.ria linearis Steph. 
Resistant to derris, — Anonymous (2) in 1Q~7. 
Cucu,1idae 
Ahasverus advona (Wa.ltl.) 
Cr^ufurd-Bensor {^) of the Cooper Technical Bureau, London, in 193? 
described an improved method for testing liouid contact insecticides in 
the laboratory. This bureau has for some time past been engaged in chemical 
