New Yoek Ageicultukal Experiment Station. 447 



BORER. 



See ^'Sinnate Pear Borer." 



BUD MOTH. 



The eye-spotted bud moth which attacks pears, is the same as 

 that which infests apple trees. It is also known as the bud worm. 

 Treatment for it is given under apples. See page 409. 



CASE BEARERS. 

 PISTOIi-CASE-BEARER. CIGAR-CASE-BEARER. 



These insects also infest apple trees and have been discussed 

 under apples. See page 409. 



CODLING MOTH. 



This insect which causes so much loss to apple growers by caus- 

 ing wormy apples, also attacks pears. It may be treated as 

 recommended on page 412. 



LEAF BLISTER MITE. 



See " Blister Mite." 



PEAR MIDGE. 



{Diplosis pyrivora Riley.) 



Description.- — The first indication of injury by this insect is the 

 stunted and dwarfed fruits. If one of these fruits is cut open the 

 maggots will be found near the core. The adult insect is a small 

 two-winged fly somewhat resembling a diminutive mosquito. 

 According to Prof. J. B. Smith*^ it appears early in the season 

 before the buds of the pear blossoms open. The eggs are probably 

 laid in the blossoms and hatch within a few davs. The youn"; mas- 

 gots bore into the embryo fruit, where they remain feeding near 

 the core until full gro%\Ti. When ready to pupate they leave the 

 fruit and go into the ground to a depth of from one-half an inch 

 to two inches. After remaining unchanged for a time they make 



43 



X. J. Agr. Exp. Sta. Bui. 9!), page 5. 



