Thank you so much! I had actually seen a few of your photos on the nathistoc.bio.uci.edu website. How fun to have a 'famous photographer' answer my question.

I think that I know what this syrphid's pupa looks like. I had collected a few to see what would come out and was surprised to end up with one of these. But I don't know what the larvae look like. Do you happen to have photographs of each stage?

I do have larvae that I think are green lacewing and enjoy watching them eat up my aphids. I haven't seen any adult green lacewing but plenty of their eggs. I recognize 'ladybug' larvae now, too. I would find them on my cilantro plant that I was letting dry out and move them onto my roses or tomatoes. I saw one on a palm near the cilantro go from larva to pupa to adult. Absolutely amazing.

Good to have you here at BugGuide. There is a whole section of the guide devoted to housing syrphid pupae and larvae images -- see here. Problem is that most of them cannot be confidently linked to the adults. But if you're just looking for an idea of what various syrphid larvae look like, take a browse through the pages of images here.

In regards to seeing adult green lacewing... If you've got eggs and larvae, I'm sure the adults must be prevalent too! I don't tend to see too many around my place in the daytime, but if I leave the porchlight on for a little while, one or two always seem to show up. Might give it a try, if you haven't already.

I don't take prisoners, and I don't raise any insects. So, no larvae. I've seen more adult lacewings than immatures, but did get a good shot of the latter once.