Eighth Report of the State Entomologist. 249 



this insect I will introduce them here, accompanying them with 

 the earnest request that you will each, as opportunity may offer, 

 make contribution, to your ability, toward the desired knowledge 

 of this already great pest of our orchards, and which, gives every 

 promise of soon becoming still more pernicious. It is manifesting 

 a tendency to widespread distribution, anid an unusual adapt- 

 ability to different varieties of tke apple. It would not be sur- 

 prising if it soon attacked our pears. 



Are the eggs of the fly distributed over the apple or placed 

 only near the calyx end? 



Do the larvas occur in apples which have not been perforated 

 by the apple-worm of the codling-moth or by some other insect? 



How long a time is required for the larvae to attain tkedr 

 growth ? 



How do the larvae leave the fruit, — 'by sieveral holes through, 

 the skin, through a single hole, or only when the apple has become 

 broken down from decay? 



When entering the ground for pupation, to what depth do 

 they bury? This could be ascertained by providing them Avith 

 a box containing a few inches of earth for burial. 



Are both the early and late fruits similarly attacked by this 

 insect? It is possible that the larvie report(3d in winter apples 

 may be of a different species. 



During what months and portions of months are the larvae to 

 be found in the apples? 



Are the puparia to be found at the bottom of apple barrels, 

 or bins in cellars, or between the staves or boards? Should xny 

 doubt exist of the identity of the puparia found under such 

 conditions, the fly should be reared from it to determine thi» 

 point. 



[See an admirable study of this insect which has since been 

 made by Professor F. L. Harvey, and published in the Report 

 of the Maine State College Agricultural Experiment Station 

 of 1889, pp. 190-241, plates 1-4. In ^hi^v paj)er, tiie description 

 of the several stages, history, distribution, lifeliistory, <itc., of 

 the insect are fully pi"(^sented. together ^^•ith the most effective 

 means known for arresting its injuries.] 

 32 



