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Spilomyia? - Spilomyia citima

Spilomyia? - Spilomyia citima
Pullman , Whitman County, Washington, USA
June 6, 2010
Size: 1 cm
I found some aquatic larvae in a tree hole on March 23. An entomologist at WSU had never seen them before, but with books and microscope identified them as aquatic syrphids, and suggested I try to hatch them out. I have kept them in an open container with the detritus from the tree hole since then, replenishing the foodstuffs as necessary. I started with 4, and when I left town several days ago was aware of one remaining in the larval form, and was not sure whether the others were dead or whether there were hidden pupae. When I came back home two days ago, I found one live larvae and, in the sink next to the container, one dead syrphid fly. I am very sad that it died. I really didn't expect anything to hatch while I was gone, since I hadn't seen any pupae! I sent photos to the entomologist and he thinks it is Chrysotoxum. I would like to know more.

Images of this individual: tag all
Spilomyia? - Spilomyia citima Spilomyia larva?  - Spilomyia citima Spilomyia? - Spilomyia citima

Moved from Spilomyia.

Moved from Syrphid Flies.

Thanks, Ron.

My pleasure, Ken.
Nice work!

Too bad you didn't get to see and photograph the pupae. I had the same thing happen recently; I was away for ten days and everybody decided to pupate and eclose in my absence. I found several dead flies and moths. They are so sneaky!

Moved from ID Request.

Looks more like
Spilomyia to me. However, I'm certainly no expert, and could be mistaken. Take a look at the images in this section (see especially S. liturata). In the meantime, I'll move your post to Syrphidae for expert review.

Welcome to BugGuide!

Spilomyia, seconded.
The eyes have it! I'd say this is safe to put at genus.

I think you're right!
Oh, this is so exciting! Spilomyia even have tree-hole larvae! I'm delighted -- Thanks!

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