160 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 1 



THE PEACH SAWFLY: A CORRECTION. 



By B. H. Waldex, Agricultural Experiment Station, New Haven, Conn. 



Following the article, Notes on a New Saivfly Attacking Peach, in 

 Bulletin 67 of the Bureau of Entomology, page 87, is a note regarding 

 the occurrence of this insect in New Jersey and Pennsylvania. These 

 records do not apply to the peach sawfly, but to the maple stem-borer, 

 PriopJiorus acericaulis MacG-., and were given in a discussion follow- 

 ing an account of the latter insect by Dr. Britton (see page 94). 



The peach sawfly, Pamphilius persicum MacG., promises to become 

 quite a serious pest in Connecticut peach orchards. The owners of 

 the orchard in Yalesville where the insect was first found, sprayed 

 over four thousand peach trees during the past season with arsenate of 

 lead and water, using three pounds in fifty gallons. The larvie were 

 readily killed and the foliage was not injured by the spray. The 

 sawfly has been found in several places in New Haven county and at a 

 distance of about fifteen miles from where it was first discovered. We 

 have received no record of its oecuring outside of the State. 



An account of the past season's observations regarding the insect 

 has been published in the seventh annual report of the State Ento- 

 mologist of Connecticut, p. 285. 



NOTES ON PSYLLOBORA 20-MACULATA SAY. 

 By JoHiV J. Davis, Vrhana, III. 



In bulletin vol. 1, no. 1 (technical series) of the Ohio Agricultural 

 Experiment Station, Mr. C. M. Weed writes of having found the 

 larvffi of Psyllohora 20-maculata on false or blue lettuce, iron-weed, 

 and various kinds of false sunflower, and as these plants were infested 

 with plant lice, he indicates that they may feed upon them, although 

 no observations to that effect were made. 



June 23, 1906, I found the larvje and one pupa of this Coccinellid 

 on the foliage of the common wild phlox {Phlox divaricata) at Homer, 

 111. None of these plants were infested with plant-lice and these 

 larvae were observed feeding upon the epidermal tissues of the leaves. 



Mr. Weed gave the length of the pupal life as being about a fort- 

 night, while in my records I found the pupal period to be six days. 

 Mr. Weed's observations were made in the fall and mine were made 

 in the spring. These differences in the lengths of the pupal period 

 may be accounted for by reason of the difference of the effective tem- 

 peratures in the spring and fall, development being more rapid in the 

 latter than in the former, even though the temperatures may be the 

 same. 



