These tiny little bugs are all over the leaves of the Yucca plant in my yard. I've never seen them before, and they seem to stay only on the Yucca. They're not on any of the surrounding plants, nor are they on the flower stem of the Yucca, only the leaves. They are very tiny; only slightly larger than the size of a pin head. Any ideas on what they are, or how I could get rid of them?
Here is a close up image of them on the underside of one of the leaves.
They are aphids, can't tell the species.
These are not aphids; they are true bugs in the family Miridae, namely the yucca plant bug (Halticotoma valida) - see http://hcs.osu.edu/albums/bygl/Yucca_Plant_Bug_2007_JB.sized.jpg for an image of an adult and nymph and http://plantdiagnostics.umd.edu/_media/client/diagnostics/gallery/yucca_bug1_l1.jpg for an image of feeding damage.
