Apple Pest Identification
The apple variety is Honey Crisp. I have two trees one in the back yard and one in the front yard. Both of these and other apple varieties were on a spray schedule using Spinosad and Horticultural Oil. The Honey Crisp in the back yard is the only one with the issue. My initial thought was Apple Maggott but I see no trails of any significance. I will not claim to have anything close to an educated eye for this purpose. The infected apples are all impacted to some degree from the blossom. With a big knife and severing the bottom third (nominal) of an apple and then looking in the saved two thirds for any signs there doesn't seem to be any spotting (occasionally the first third should have been half). I have included three images. The first image (Apple Problem_1.jpg ) is an external view of an infected apple. Many have the spots further up the side . The second image (Apple Problem_2.jpg) is from the blossom end with a thin slice taken off. The cut went through a spot at the nominal 1 o'clock position and you can see no trail from the external spot. The third image (Apple Problem _3.jpg) is another view from the blossom end with an additional slice removed. As I indicated I'm puzzled because of no apparent trail (Apple Maggot) and further confounded because the same variety in the front yard doesn't seem to have the problem. Several other varities in the yard also do not seem to have the problem.