- 55 - 
Psylliodes punctulata Melsh., •- the hop flea l:ertle 
Dorst ( loU ) in 113^ reported on flea beetle injury to sugar ^rets 
in central Utah, Durin^; the spring of 1'''37 the hop fie? ^'oetle "cred in 
enormous nurivors upon Cheirinia repanda (L.) Lin^T, an introduced wild 
n-ustard kn'^wn co-rncnly a;^ vr~str-rn wallflovr-'r, ^n th- Tpnf(} land adjacent 
t-- the cultivated areas -f the Sevier Valley, in central Utah, Prelininary 
exporir.onts designed to control the flea "beetle indicated that a spraj'- nac'.e 
up at the rate rf 2 pounds of derris ro''t powder, containin.': 2 percent of 
rotenone, in 100 gallons of water killed a large proportion of the resident 
flea "beetle population. This spray, however, ga-^e only temporary protection, 
as inconini: flea "oeetles soon reiniested the field??. Bordeaux nixture 
(U-U-50), to which U pounds '^f calcium arsenate wa?. added, applied at the 
rate of 75 itallons p^r acr'- gj^ve satisfactory ^rotecti^-n arainst the flea 
■beetles. 
Fsylliodes sp. 
See HaTop ( 175 ) under Altica sp. , on pa^es 15, 22,. . . \ 
JRhaphidopalpa f e-^-^ralis Kotsch. 
Neoton, 1 po^xnd in SO imperial gallons of v/ater plus 2 po^an-^s of 
soap, killed all adults of " Aulacophora fenoralis ". [This species accordine 
to H. S. Bar"ber, an stated "by Iluesetr c:, may 'oe a chryscmelid. , . if so, the 
name sh-^uld "be Rhaphido-'PlT?-?. femoralis Motsch.]. — Institute of Physical and 
Chemical Research (220) in 1-^27. 
Nezu, Sakamoto, and Sonoyama ( 30^ ) in IO3U reported studies on this 
species, a seri-^us pest of cucur'jits in Japan. Derris sprays are cffecti"«^e 
against the larvae and the adults, 
Mishima ( 237 ) in 193^ reported tha.t in Jar<an a derris dust was effect- 
ive agpinst the adult "beetles on cucurbits. Derris also kills the eg^s and 
stimulatec; the growth of the plants, 
Sawarar^i ( "^3^ ) i^ 193^ recommended sprays containlnf? derris for the 
control of the larvae of this species in Japan. In the Mie Prefecture they 
sh'-uld be ayplied twice, in mid-J'jne and early in July. 
Rhaphi dopalpa f eveicollis Lucas 
See Chevolirr and Laffoni (81 ) under Alti^ca ampelophat:a Guer. , -n 
paee' lo •■ . 
Syste_na frontalis (F.), a cran'berry flcn. beetle 
Against the cran"borry flea beetle, a spray ^f 10 r)Oundp of derria 
powder (U percent of roten^ r.e) and 1 po\uid of Areska-o in 100 ,sallons of 
water, applied at the rate of UO'" gallons per acre on Aug^ist 11, ^.ve a 
satisfactory kill of the "beetles. — Hassach^isetts Ai^ricultural Eyprrimpnt 
Station (277) in 1^17. 
