INSECTS AFFECTING PARK AND WOODLAND TREES 



5«3 



Hickory shuck worm 



Enarmonia caryana Fitch 

 A slender, white*caterpillar about ^4 inch long, mines hickory shucks causing them 

 to abort and fall prematurely. 



This little miner of the hickory shucks or husks is very common in 

 New York State and so far as our observations go, its operations have been 

 confined to the husk or shuck enveloping the nut. Dr Shimer states that 

 in Illinois the larvae live in the nut of the bitternut hickory, Carya 

 a mar a, destroying its interior and causing it to fall. Dr Fitch has placed 

 on record the statement of Louis Potter of Easton N. Y., to the effect that 

 this insect was so numerous in his section in 1856, that several of the 

 hickory trees scarcely produced a single nut. According to Dr Shimer, the 

 moths appear the latter part of November, hibernate in this stage and live 

 till some time in June, when they deposit eggs on the young nuts. Dr Fitch 

 states that specimens of this insect were received by him from Easton 

 N. Y., in April, with a letter saying that the insect pupated about the first 

 of February, the moth emerging the latter part of that month. Dr Pack- 

 ard records taking unrubbed specimens of this moth May 20, in a growth of 

 young hickories at Providence. These two records seem to indicate that 

 some of the insects hibernate in the larval or pupa stage. 



Description. The moth has been described as follows, by Dr Pitch : 



Sooty black, the fore wings with reflections of tawny yellow, blue and 

 purple ; their outer edge black, with oblique triangular whitish streaks placed 

 at equal distances apart. A very oblique faint silvery blue streak extends 

 inward from the points of two of these white streaks, namely, the fourth 

 and sixth ones from the tip of the wing ; while the usual white spot on the 

 inner margin of the wings is wanting. Expanse of wings, .6 inch. 



Acorn weevil 



Balaninus nasicus Say 



A weevil, with a remarkably long slender curved beak, occurs on acorns or may be 

 bred from white legless grubs within them or other nuts. 



This species was met with in small numbers when collecting in June 

 at Karner in [901, and was bred the following season from acorns on the 



