250 



HALF HOURS "WITH INSECTS. [Packard. 



another species (Fig. 192, Saperda cakarata; b, upper and 

 c, under side of the head, enlarged), one of our finest long- 

 horned beetles. 



Among other beetles found on the leaves of the elm are 

 the European Calmar leaf beetle (Galeruca ccdmariensis). 

 It is about the size of the common striped squash beetle, 

 but grajnsh j-ellow, with thi'ee black spots on the thorax and 

 a broad black stripe on the outer edge of the wing covers, 

 with a small oblong spot near their base. Then there is the 

 common Prussian blue flea beetle {Haltica chalybea, Fig. 



Fig. 191. 



Linden Tree Borer and Beetle. 



193), often occurring in great numbers on the leaves, and 

 the Cotalpa beetle (see Fig. 21), which sometimes steals a 

 few leaves. 



The maples are unusually free from noxious insects. 

 Young saplings are sometimes cut down in their prime by 

 certain Buprestid borers, and the trunks are often riddled 

 with the large holes made by the Tremex or horn-tail. This 

 fine saw-fly may be found in maples, as well as elms and 

 other trees, in all stages of growth in the autumn, the large, 

 soft, white, fully grown larvae, whose bodies terminate in a 

 horn}^ hook, occurring with the pupse and the flies them- 



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