Can anyone please identify this bug on my apple tree? It's an insect with two spikes in the rear. Thanks.
Thanks so much for the quick reply. Is it a pest I need to worry about? I think I already have both Rosy Apple and Wooly Apple aphids on the tree (http://www.home-orchard-apple-trees.com/apple-aphids.html) and codling moth (apple worm) infestation. I've been spraying garlic but I don't know if it's working. Organic apples must be a myth...