8 NEW YORK STATE MUSEUM 



It has spread over a large proportion of Connecticut and into 

 Khode Island. It had made its way up the Connecticut river 

 valley to Springfield by 1891 and to Amherst by 1895. It has 

 now attained a rather general distribution over the eastern por- 

 tion of Massachusetts, having been recorded by Mr Kirkland 

 from Worcester and towns in that vicinity, Ayer, Groton and 

 places in the eastern and southeastern part of the state. It 

 has also been found in a number of places in western Massa- 

 chusetts. 



The above records indicate most clearly that this pest has not 

 made its way to all portions of New York state where it may 

 be expected to thrive. The climate of the upper austral life 

 zone seems to agree with the insect, judging from its abundance 

 and the number of broods in Albany and vicinity. The area 

 within the state embraced by this zone is rather crudely repre- 

 sented on pi. 2, which was first published in the 11th report on 

 the injurious and other insects of the State of New York for the 

 year 1895. Briefly, it embraces Long and Staten islands, the 

 valley of the Hudson river north about to Saratoga and a large 

 portion of the northwestern and central part of the state ad- 

 jacent to Lake Ontario and including Oneida, Cayuga and 

 Seneca lakes and neighboring bodies of water. This insect will 

 probably make its way along the lines of travel to most of the 

 cities and larger villages lying within the above limits. The 

 fact of its having become established at localities not yet 

 included within this zone indicates that it may have a somewhat 

 wider range, though climatic conditions will probably prevent 

 its becoming destructive outside this area. 



Description. The work of this pest is so striking as to excite 

 the attention of even the most casual observer. The majority 

 have little idea of the appearance of the insect in its various 

 stages and but faint conception of its life history. In order to 

 control it, it must be recognized and its nature understood to a 

 certain extent. 



The parent insect may be recognized by aid of the colored 

 figures (pi. 1, fig. 5, 6) though care should be taken not to con- 

 found it with the striped cucumber beetle Diabrotica v it- 

 tat a Fabr., which it resembles in a general manner. The elm 

 leaf beetle is about ^ inch long with the head, thorax and 



