414 NEW YORK STATE MUSEUM 



The full grown larva is about an inch long, the head red and the body 

 pale yellowish with subdorsal and sublateral rows of triangular black 

 spots, one on each segment. True legs black, prolegs pale yellowish 

 [pi. 19, fig. 8]. 



This species, as stated by Dr Riley, has been observed feedino- on 

 Scotch and Austrian pines in New Jersey. There are several sawfly larvae 

 having t,he same general appearance and habits as this species. 



Bibliography 



185S Fitch, Asa. Ins. N. Y. 4th Rep't, p. 58 



1S90 Packard, A. S. U. S. Ent. Com. 5th Reji't, p. 758 



Abbott's pine sawfly 



Lopliyrns abbotii Leach 



Yellowish, black headed, black spotted, false caterpillars nearly an inch in length, 

 defoliate white and hard pines from midsummer till late fall. 



This species is a common one in New York State and occasionally 

 inflicts considerable injury, particularly on young trees, though as a rule it 

 is present here and there in relatively small numbers. The caterpillars are 

 gregarious and consequently their work is very apparent because entire 

 branches are quickly defoliated. The ravages of this species are by no 

 means confined to New York, it having been reported from a number 

 of other states and Canada, and Dr Smith has recorded an outbreak in 

 New Jersey, which resulted in the defoliation of about 50 acres. This is 

 very exceptional. Dr Packard states that the insect is so abundant on 

 Cape Cod as to threaten the existence of plantations of young pines. 

 There are probably two generations, the larvae of the first appearing in mid- 

 summer and those of the second in .September and October. The larvae, 

 when disturbed, throw back the head and move the upper portion of the 

 body in a manner very siinilar to that of species of Datana. Many can be 

 dislodged by violent shaking. The larvae spin their brownish, oval cocoons 

 among the leaves, and adults of the first generation appear about the middle 



