My newly planted ornamental pears have these critters sitting on the top side of quite a few of the leaves (old and new leaves). What are they? Are they good or bad? I've also been squashing clusters of tiny green eggs on the underside of brand new leaves. Could they belong to them or some other pest?
http://i562.photobucket.com/albums/ss69/sierra_099/IMG_1853.jpg
http://i562.photobucket.com/albums/ss69/sierra_099/leafunderside.jpg