238 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 2 



Lugger, Webster, Newell, Simpson and Chittenden are also the authors 

 of literature upon this species, but none make mention of having ob- 

 served the eggs and in the more recent paper by Mr. Quaintance it is 

 stated that the egg had not been observed. 



The writer on June 19, 1908, at Olden, Mo., collected from the 

 smooth surface of small apples and from the upper surface of apple 

 leaves borne near fruit, eggs which were at the time taken to be those 

 of the codling moth. At the time of collection some of these speci- 

 mens were noted to be much smaller than others in the lot. Some of 

 these smaller ones were placed in breeding cages at approximately 

 out-door temperature. A number of the larva? hatched and entered 

 apples placed in position for them. Upon the emergence of the larvae 

 from the fruit several specimens resembling the larva? of Enarmonia 

 prunivora were isolated and in time yielded adults of this species. To 

 verify the determination of the moths reared, specimens were recently 

 submitted to Mr. August Busck of the Bureau of Entomology, who 

 has, through the kindness of Doctor Howard, looked them over and 

 found them to be this species. 



The eggs upon apple trees, so far as I have observed, are deposited 

 singly either upon the smooth surface of the forming apple or upon 

 the upper or glabrous surface of the apple leaves. In this respect the 

 oviposition habits of the moth upon apple is not unlike that of the 

 codling moth. 



The eggs when freshly laid appear as small semi-transparent yel- 

 lowish-white spots, looking not unlike much flattened and very small 

 drops of miUv. In outline they are usually oval, fitting closely down 

 upon the surface as convex disks. Specimens measured upon an 

 average .68 mm. long by .53 mm. broad, which measurements show it to 

 be a trifle more than one half the size of the egg of the codling moth. 

 They show a similar reticulation of the surface. During incubation 

 they seem to undergo practically the same changes in appearance as 

 seen in the incubation of codling moth eggs. The egg, at first milky 

 white, shows, after a few days, a pinkish ring, which is the outline of 

 the embryonic larva within. A day or two before hatching the darker 

 anterior and posterior ends of the larva show through the egg shell 

 as a dark spot. The hatching period is probably about five or six 

 days under average orchard conditions, but no eggs were seen when 

 deposited, though they were found when still fresh and milky and 

 from this stage hatched in four days. 



Larvffi under observation spent upon an average of 17 days in the 

 fruit from the time they were seen to hatch until they emerged for 

 pupation. From 21 to 23 days elapsed from the time eggs hatched to 



