3S 



THE INSECT RECORD FOR I9OI 



The Birch-Leaf Skele- 

 TONiZER ^ mentioned in recent 

 of these records as destruc- 

 tiv^ely abundant appears also to 

 be on the wane, though only 

 to a slight extent. The birches 

 in southern New Hampshire 

 showed abundant evidence of 

 its presence, but in the vicin- 

 ity of Durham, at least, the 

 injury, as a rule, was confined 

 to the upper part of the foli- 

 age, and did not extend over 

 the whole tree as heretofore. 

 The Fall Web woRM,^ on the 

 other hand, was noticeably 

 more abundant, many trees, 

 especially the ash, being com- 

 pletely defoliated by them. 



Miss Caroline G. Soule, 

 to whom I am indebted for 

 many observations upon in- 

 sect pests, reported that at 

 North Hampton in Septem- 

 ber she found a Harvest-spi- 

 der "feeding upon living 

 animal food, a pupa of the 

 tiny Birch-Leaf Skeleton izer." 

 This observation is of special interest, because many natural- 

 ists have claimed that these harvest-spiders do not feed upon 

 living insects. 



The egg masses of the White-marked Tussock Moth ^ 

 were sent by Mr. Charles V/. Morrill, with the statement that 

 they were present in both Nashua and Manchester; speci- 

 mens were also received from other parts of the state. This 

 is one of those insects which is nearly always present in lim- 



'^Bucculatrix canadensiella Fitch. 



'^Hyphantria cunea Drury. 



^Orgyia leucostigtna Smith and Abbot. 



Fig. 8. Birch leaves injured by Skele- 

 tonizer, with cocoons. 



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