North American Fruit Explorers mailing list at ibiblio

[Steve <sdw12986@aol.com>]

I have decided to split this question into two parts. It's part two that 
has prompted me to write.
Something I've wondered about for a long time. Every spring, when my 
apples have just started to develop, a few to quite a few get attacked 
by a pest that I feel may be simply apple maggots. I'll find a little 
track just under the skin that leaves a curved trail perhaps half way 
around the apple. These always drop by the time they are the size of a 
dime. I don't loose enough apples to this pest to worry about it.
Later in the season, I hang red sticky balls in my trees. I watch for 
the presence apple maggot flies. If I catch very many, I simply spray 
with Carbaryl, usually a couple of times, and I rarely pick an apple 
with any maggot damage.
So the question: Is there a real early attack of apple maggot that 
starts not much more that a week after petal fall or is this some other 
pest? [see below before you jump in with an answer!]

Steve in the Adirondacks

PS  Today I looked through Google Images (searching for apple maggot 
with various other words). Every picture found shows the typical damage 
in a larger apple and no pictures show what I find in the spring.

Hold on... oh brother. I typed all that and got a different idea about 
search words. Here's a picture that looks exactly like my damage:
http://www.wvu.edu/~agexten/orchardmon/pest_descriptions/pest_images/ph1-35c.JPG 

I seems I have European apple sawfly.