About those aphids

A follow-up to the aphid situation: Not too long after I noticed the aphids, I spotted many tan/brown aphidy-looking things among the live aphids.  I'd assumed these were some sort of normally empty skins cast off at a late stage molt, but actually they were aphid mummies.  These are aphids that have been parasitized by wasp larvae that kill 'em, eat them from the inside out, then "hatch" out a small hole in the dead aphid's husky skin. !

Well, after about a week, there really were plenty of these aphid mummies to be seen and the aphid numbers seemed to be diminishing noticeably.  Score one for biological control.  Thank you, unknown parasitic wasps!