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INSSCTS AFFECTINGGRSENHOUSS 
AND. ORNAMENTAL PLANTS 
A PARASITIC WASP (Scolia dubia Say) 
District of Columbia. E. A. Back (August 26): This wasp was found to "be 
very numerous, resting on evergreens and flying over a lawn in the 
northwestern part of the city on August 24. It has "been abundant about 
10 days. Tho wasp was not found flying over neighboring promises. 
SPINDLE WORM ( Achat odes zoao Harr.) 
Michigan. R. Hutson (August 24): Spindle worms arc fairly common in colum- 
bine and dahlia at East Lansing. 
CYCLAMEN MITE ( Tarsonenus pallidus Banks) 
Maine. H. B. Poirson (July 23) 5 On this date the cyclamen mite was heavy 
on larkspur, or delphinium, at Winthrop, causing blackening of flower- 
bud parts and distortion of foliage. 
ALDER 
ALDER FLEA BEETLE ( Altica bimarginata Say) 
Maine. H. B. Peirson (August): Alder flea beetle caused severe browning 
in many growths of alder in eastern and central Maine during July and 
Augus t . 
J. V. Schaffner, Jr. (August 2^) : Throughout eastern Maine the 
foliago of speckled alder is badly skeletonized. 
Vermont. H. L. Bailey (August 19): Alder floa beetle has been very abundant 
in sections of Essex County, including Ferdinand and Warner's Grant. 
Leaves completely skelctonizec3 and many fallen to tho ground on August l4. 
Nevr York. J. V. Schaffner, Jr. (August 25): Through the region of the Adir- 
ondacks in New York the foliage of speckled alder is badly skoletonizod. 
Idaho. J. C. Svenden (July 29): There is a rather severe outbreak at Ashton, 
Tar-<hoe Notional Forest, which will no doubt result in the defoliation 
of a large precentage of the willow shrubs in that locality. First 
record in this district. 
ARBORVITAE 
ARBORVITAE LEAF MINER ( Arr:yresthia thai el la Pack. ) 
New York. R. D. Glasgow (August 18): Ono nursery in the lo'ver Hudson Valloy 
is reported to have removed and destroyed several score of large arbor- 
vitae trees that had been rendered worthless by the arborvitae leaf miner. 
