Save my Citrus

I'm finally giving attention to my tiny Valencia Orange and Lime trees I planted last year. I did everything right: dug extra wide and deep holes, set trees to correct height and mulched around base. All that didn't matter though because within a few weeks they were under assault from an unknown pest. I stopped by Flowerdale Nursery to ask some advice as they have an excellent selection of fruit trees. I didn't have any leaves with me and it was suggested I send some photos. I sent the following, hopefully my next post will be about the excellent advice I received.