414 NEW YORK STATE MUSEUM 



The full grown larva is about an inch lont;', 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. iq fig. 8]. 



This species, as stated liy Dr Riley, has been observed feeding on 

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

 ]ia\'ing the same general ai)pearance and habits as this species. 



Bibliography 



1858 Fitch, Asa. Ins. N. Y. .uh Re|i't, p. 58 



1890 Packard, A. S. U. S. Ent. Com. stli Re|i't, ]i. 758 



Abbott's pine sawfly 



Loplivnis abbot a Leach 



Yellowish, black headed, l)la( k spotted, false caterpillars nearly an inch in length, 

 defoliate white and hard pines from niidsuiiimer till late tall. 



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



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



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



gregarious and consequently their work is very apparent because entire 



branches are quickl)' defoliated. The ravages of this species are by no 



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



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



New Jersey, which resulted in tin; 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 |)ines. 



There are [jrobabl)' two generations, the larvae of the first apjjearing in mid- 



suiumcr and those of the second in .September and (Jctober. The larvae, 



when disturljed, throw back the head and mo\'e the upper portion of the 



b(Hl\- in a manner verv similar to that of species of Datana. Many can be 



dislodgi-d \)\ violent shaking. Die larvae spin their brownish, oval cocoons 



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



