2 CIRCULAR 2 3 7, U. S. DEPARTMENT OF AGRICULTURE 



The adult beetle is a beautiful brightly colored insect about the size 

 of a Colorado potato beetle, but on warm, sunshiny days it is more 

 active than this well-known pest. The head and thorax are shining 

 metallic green and the wing covers are reddish bronze tinged with 



Figure 1. — Map of New Jersey and parts of adjoining States showing the status of 

 Japanese-beetle infestation in 1931. The heavily infested area is indicated by the 

 more stippled portions. The large scattered black dots show the known local 

 occurrences of the insect in the part of the area of discontinuous distribution 

 included within the map limits 



green at the edges. On the sides and tip of the abdomen are short 

 tufts of hair which resemble small white dots. (Fig. 2.) 



The life period of the adult beetle ranges from approximately five 

 to eight weeks, and during this time it feeds on leaves and fruits. 



