60 NEW YORK STATE MUSEUM 



Company, Stamford, Conn., reported the above species with the 

 associated C. nervosa Panz. as doing a great amount of in- 

 jury to locust trees on Long Island, many being as brown as though 

 fire had run through them. He stated that the smaller, C. 

 nervosa, appeared to be the more abundant of the two forms. 



A personal examination of the locality September 19th showed 

 that most of the injury was confined to trees less than thirty 

 feet high, or to large ones in the near vicinity of this new 

 growth. The damage was so pronounced that affected areas 

 showed a distinct brown color, even at a considerable distance, 

 though this had been obscured to some extent by the develop- 

 ment of new leaves subsequent to the attack. The major por- 

 tion of the injury appeared to result from skeletonizing the 

 leaves by the beetles, the small trees noted above showing 

 comparatively few evidences of having been mined by the grubs. 

 A very few leaf miners, evidently belated individuals, were 

 found. 



This insect commonly occurs on large trees here and there 

 throughout Long Island, though as a rule there is not material 

 injury. The above described outbreak is undoubtedly irregularly 

 periodic in character and appeared to be limited very closely to 

 Syosset and adjacent Jericho. The trees, while checked, do not 

 appear permanently injured and it is probable that there will 

 be speedy recuperation. 



Early history. The late Doctor Lintner, in his report for 

 1896, records similar injury to locust trees at Yaphank, L. I., 

 the leaves appearing much as does elm foliage after extensive 

 feeding by the elm leaf beetle. Doctor Chittenden states that 

 this species is nearly always more or less troublesome to locusts 

 in Maryland, Virginia and the District of Columbia, adding that 

 the injury is usually most severe on young trees. Doctor 

 Hopkins states that about 1892 thousands of locust trees died in 

 West Virginia after the foliage had been destroyed three years 

 in succession by this insect. The direct cause of the death of 

 these trees, however, may have been due to abnormally cold 

 weather. Serious damage during the seasons of 1904 and 1905 

 to locust trees along the Ohio river was recorded by Mr E. C. 

 Cotton, the defoliation being general for a distance of over fifty 

 miles, according to Mr Burgess. This insect is local in habit 

 and appears to be decidedly more injurious in the latitude of 

 Virginia. The late Professor W. G. Johnson reports this species 

 as defoliating apple trees near woods, presumably locust trees. 



