-SO- 
report, reports of serious infestations with the elm 
'Scurfy scale on white elms have been received. 
EUEOFM ELM SC.JL3 ( Gossvparia sour ia Modeer) 
Wisconsin S.B.Pracker (april 15): Severely damaging trees on ko dr 
50 properties on the -"est side of Madison. Many of them 
are "being sprayed "dth miscible oil. 
POPL.-Jl 
COTTONWOOD 3CR5P.( Heetrodera scalator Eab.) 
Nebraska M.H.Swenk (April 1-April 25): During the period covered by 
this report, reports of serious infestations with cottonwocd 
borers on their respective trees have "been received. 
GREEN HOUSE' aNI R N A M E N T A I PLANTS 
APHIIDaE 
Georgia Oliver I. Snapp (April 20): Aphids are unusually abundant 
and destructive at the present time on shrubs and ornamental 
plants in yards at Eort Valley. 
CITRUS MEALYEUC- (ps eudococcus citri Risso) 
"isconsin A.C.Mommsen (March 2k) : This mealybug is proving unusually 
troublesome on house plants at Kilbourne. 
HEMISPHERICAL SCALE ( Saissetia henisphaerica Targ.) 
7isconsin T.M.Birrenkott (March 9): At Cross Plains this insect was 
reported attacking ferns. 
LILIE S 
BULB MITE ( Rhizogl.yphus hvacinthi Boisd. ) 
Massachusetts A. I. -Bourne (April 21): Mr »W.D. Whit conib, of the substation 
at Waltham, reports an infestation of the bulb mite, Rhisoglyohu s 
hyacinthi, on roots of calla lilies where severe stunting 
of the plants and checking of the blooms are being caused. 
CKRYSA-ITHEMUM 
BLACK CHRYSANTHEMUM APHID ( Microsiphoniella sanbomi 
" OiH.) 
Mississippi R.W.Harned (April 21): The black chrysanthemum aphid was 
reported as damaging chrysanthemums at Grenada and Moss Point 
on April l6, and at Eooneville on April 20. 
