M 



NEW YORK STATE MUSEUM 



Treatment: dig out young borers. Kill others by injecting 

 carbon bisulfid in the burrow and then stopping the orifice with 

 putty or soap. Burn badly infested trees. 



Fig. 36 Leopard moth, adiilt female (after Pike) 



44 Bronze birch-horer (A g r i 1 u s a n x i u s) . If infested bark 

 is examined, a slender flat-headed grub may be found running 



burrows in all directions in the inner 

 portions. White and other birches 

 are attacked, one of the first indica- 

 tions of attack being the dying of 

 the tree at the top. It is very in- 

 jurious at present in Buffalo. The 

 beetles appear in June. 



Treatment: cut and burn badly 

 infested trees. 



GARDEN INSECTS 



45 Colorado potato beetle (Dory- 

 ph r a 1 0-1 in e at a). S:;outyel- 

 lowish beetles with black striped 

 wing covers appear in early spring, 

 feed, and deposit yellowish eggs in 

 clusters on under surface of leaves. 

 The reddish, black marked grubs 

 also devour the foliage. 

 Treatment: spray vines with poison; handpicking. 



Fig. 37 Bronze birch borer: a female 

 beetle; b first abdominal segments of 

 male from below; c larva from above — 

 all enlarged about 33^ times (after Chit- 

 tenden, U. S. dep't agr., div. ent., bull, 

 18, n. s.) 



