TiJE (UiKKiiv Fkuit-Flv. 35 



to slightly thicken or harden around tlu^, egg and adhere closely to 

 it. x\pparently the eggs are laid in any part of the fruit. Old egg- 

 sears are quite easily discernible on the cherries; the minute, round 

 depressed spot on the right-hand cherry of the two upper ones in 

 figure 13 is probably an egg-scar. 



Egg-laying doubtless extends over a considerable period, probably 

 beginning in June and continuing until into xVugust, if any cherries 

 remain on the trees so lono'. We have no data bearino- on the dura- 

 tion of the egg-stage. The eggs probably hatch in a few days. 



The maggot^ s life. — As the eggs are laid beneath the skin, the 

 moment it hatches, the maggot finds itself surrounded with its 

 favorite food, the juicy flesh of the fruit. It apparently soon makes 

 it way to near the pit where it proceeds to revel in the flesh, soon 

 forming a rotting cavity, as shown in flgure 14. The maggot 

 spends its whole life of three or four weeks in a single cherry, and 

 rarely more than one maggot is to be found in the same fruit. 

 Apparently many of the maggots are nearly full grown' about the 

 time the fruit is ready to pick, and they And their way into the con- 

 sumer's hands. Alflicted orchardists report that but few of the 

 infested cherries fall from the trees, hence when the maggots emerge 

 they doubtless drop to the ground, where they soon bury themselves 

 just beneath the surface. Yery soon after entering the ground, 

 23robably within a day or two, the maggots contract, their skin 

 liardens and turns brown, and t\\Q piqmrmcm stage is formed. The 

 maggots will change to puparia in any convenient place, as the bot- 

 tom of baskets, rubbish, etc. 



Nwinher of hroods. — AVe have some puparia which w^ere formed 

 in our breeding cages as early as July lith, from which no flies 

 have yet emerged. Hence we conclude that the insect winters as a 

 puparium, and furthermore, that there is but a single brood of this 

 new cherry pest in a year. Evidently the insect may spend ten or 

 even eleven months of its life in the soil in the pitjmria stage. 



How THE Insect May be Spread. 



As it infests only the fruit, one need have little or no fear of 

 receiving this new cherry pest from nurserymen. If nursery trees 

 happen to be grown under infested cherry trees, it is possil)le that a 



