INSECTS AFFECTING PARK AND WOODLAND TREES 5 1 



American elms having much the same character as mentioned above, but with sliort, 

 curled, legless grubs in the smaller limbs 



Black elm snout beetle, IM a g d a 1 i s b a r b i t a, p. 73 

 The reddish elm snout beetle, M a g d a 1 i s a r m i c o 1 1 i s is frequently associated with 



the above p. 74 



Dead limbs projecting above leafy branches or broken and hanging in tlie midst of other- 

 wise healthy trees Leopard motli, Z e u z e r a p y r i n a, p. 75 



Very large, round, irregular borings in the trunk of different kinds of oak, maple and 



locust Carpenter worm, Prionoxystus robiniae, p. 79 



A legless, flattened, white grub boring at the very base of thornapple, mountain ash, shad- 

 bush and fruit trees Round-headed apple borer, S a p e r d a c a n d i d a, p. 84 



A large-headed, flattened, legless, white grub making shallow galleries in various trees 



Flat-headed borer, Chrysobothris femorata, p. 86 

 Dead stumps or timbers in houses etc. may be irregularly mined by ants 



White ants, T e r m e s f 1 a v i p e s, p. 87 

 Large black carpenter ant, C a m p o n o t u s h e r c u I a n e u s, p. 90 

 Lindens frequently have large, irregular galleries at the base of the tree 



Linden borer, S a p e r d a v e s t i t a, p. 9 1 

 Ash trees sometimes have moderate-sized galleries in the trunks, the work of a white, 



sparsely haired caterpillar Ash borer, P o d o s e s ia f r a x i n a, p. 92 



Our common native black locust is sometimes badly riddled by moderate-sized galleries. 



Locust borer, C y 1 1 e n e r o b i n i a e, p. 93 

 Very large galleries in this tree_ 



Carpenter worm, Prionoxystus robiniae, p. 79 



Poplars are very subject to the attack of a legless, white grub which makes large, irregular 

 galleries, and in midsummer piles of excelsiorlike shavings may be seen at the base of 

 infested trees Poplar borer, Saperda calcarata, p. 98 



Willows and poplars are frequently severely injured by medium-sized, transverse galleries 

 usually at the base... . Mottled willow borer, Cryptorhynchus lapathi, p. 100 



Lilac stems are frequently tunneled by a white, sparsely haired caterpillar, the branches 

 above wilting in midsummer Lilac borer, Podosesia syringae, p. 104 



Sugar maple borer 

 Plagionotus speciosiis Say 

 Dead limbs among leafy branches or transverse ridges and dead areas on branches or 

 trunks of sugar maples are the most characteristic signs of the work of the large fleshy, 

 footless grub belonging to this species. 



Sugar maples along the roadsides in the State of New York probably 

 have no more serious insect enemy than this pernicious borer. The attacks 



