Il8 SECOND REPORT OF THE STATE ENTOMOLOGIST. 



COMSTOCK : in Rept. Comm. Agricul. for 18S1-1883, pp. 195-198, pi. 14 (operations, 

 larva, pupa, imago, remedies). 



Saunders : Fruit Insects, 1883, pp. 135, 136, f. 143. 



Cook ; in Count. Gent., xlix, 1884, p. 857 (habits and occur, in Mich); 14tli Ann. 

 Rept. Mich. St. Horticul. Soc, for 1884, 1885, pp. 200-203, figs. 1-3 

 {n neral notice). 



LiNTNER : in Bull. N. Y. Agricul. Esper. Station, Issv, Dec. 39, 1883 (descrip- 

 tion, habits, etc.). 



In November, 1883, the following letter of inquiry was submitted to 

 me from the Horticulturist of the New York Agricultural Experiment 

 Station, with the request that I would make reply to it : 



We are troubled here with a worm that completely destroys our apples. 

 It seems to be different from our common apple-tree worm — not so 

 large, but looks like the apple-tree borer when small. Last year was the 

 first that I was troubled with them. The apples look well on the out- 

 side, but when cut they are found to be completely honey-combed by 

 the worm, making them worthless. Last year they worked in my Spitz- 

 enberg apples. This year the Spitzenbergs are good, but the worms 

 worked in the Northern Spy, Talman sweeting and Fameuse. and en- 

 tirely spoiled them. They also worked some in other kinds. The 

 Rhode Island greenings are free from them yet, and the Baldwins are 

 but slightly injured. There is a general complaint this year. 



The question which I wish to ask is, are these worms going to spread 

 until it is impossible to raise apples fit to use, or is there some way 

 to stop them ? Last year I took pains to pick up all the poor apples 

 in hopes thus to destroy them, but failed, as they have increased 

 ten-fold from last year. But I do not understand why the Spitzenbergs 

 were ruined last year and are so fair this year. If you can give me any 

 light on the subject, it will be thankfully received. 



M. P. JUNE. 



Brandon, Vt. 



My reply to this inquiry was published in the Husbandman [of El- 

 mira, N. Y.] for December, 1883, and also issued, in slips, as Bulletin 

 No. LXXV, of the New York Agricultural Experiment Station. It has 

 been somewhat extended and re-arranged in the present notice. 



It is quite probable (the infested apples were not submitted for exami- 

 nation) that the insect whose operations are above stated is the one 

 popularly known as " the apple maggot," and scientifically as Trypcta 

 pomonella Walsh. The species was first described and named by Mr. 

 B. D. Walsh, in 1867, in the American Journal of Horticulture. 



The Larva. 



Operations. — Mr. Walsh writes of its work as follows : " It tunnels 

 exclusively the flesh or pulp of the apple (unlike the apple-worm, which 

 burrows chiefly in the core and the j)ortions immediately surrounding) 



