214 NEW YORK STATE MUSEUM 



This species has received very Httle attention at the hands of economic 

 entomoloiJ^ists, though our experience in this State would appear to show 

 that at times it may become very abundant and correspondingly injurious 

 to the plant. Professor Comstock records this insect as having been found 

 in great numbers by Dr Howard on orange trees in Louisiana and he 

 states that he has received it from Havana, from which place he thinks it 

 may possibly have been imported into this country. Prof. T. D. A. 

 Cockerell has recorded the reception of this species on plants imported 

 from japan, indicating that the insect has an extended distribution. 



A single parasite, Aphelinus fuscipennis How., has been 

 reared at the United States Department of Agriculture from this insect. 



Remedial measures. Experiments conducted by Dr C. L. Marlatt 



against this insect have demonstrated that the young could be killed with a 



standard kerosene emulsion diluted with 9 parts of water, and that in order 



to destroy the adults it was necessary to employ an emulsion of four times 



that strength, or the standard emulsion diluted with but 2 '2 parts of water. 



He states that owing to the hatching period of this insect extending over a 



number of weeks and the intermingling of broods later in the season, it is 



dif-ficult to control. 



Bibliography 



1881 Comstock, J. A. U. S. Dep't Agric. Ri.-|i't 1880. j), 313-14 



Scurfy scale 



Clihviaspis furfitra Fitch 



A whitish, scurfy appearance on the trunks and limbs of certain trees may be due to 

 the presence of large numbers of this scale insect. The female scale is irregular, oval, 

 with a yellowish point and about ' ,0 inch in length. The male scale is three ridged, 

 snow white, with a yellowish jjoint at one extremity. 



This exceedingly common species is of interest in this connection 

 largely on account of its occurring so abundantly on the Japanese quince. 

 It is sometimes present in such large numbers that the bark is nearly 

 covered with dirty white, scurflike patches and it is from this that the pop- 

 ular name of the insect has been derived. 



