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Photo#298124
What is going on here?! - male

What is going on here?! - Male
Silver Lake, Cowlitz County, Washington, USA
June 27, 2009
Size: 3/4"
While vacationing at Silver Lake, Washington last week I noticed these large midges doing something very strange. At sunset each evening (around 9:30 PM) the male midges would gather on the deck of our motel room above the water. Within a few minutes they would begin emitting a drop of dark brown liquid from the end of their abdomen. There was a thin, pointed, transparent tube that the droplet attached to. When the droplet was large enough the midge would dip his abdomen into it inserting a corkscrew-shaped tube. My guess is that the midges were preparing to mate. Within 30 minutes they were gone, presumably in search of females. Can anyone tell me what was going on here? Thanks!

To those of you folks who are going to the Bugguide Gathering this month, I hope you have better luck than I did finding insects in Washington. My husband and I visited several state parks, Mt. Rainier, Mt. Saint Helens, the Columbia River Gorge, and the Long Beach Peninsula during our visit. I was surprised at the small number of insects and spiders we saw in those areas. Even the mosquitoes weren't too numerous! We did see a few interesting beetles. One rainy day I saw thousands of little red springtails on tree bark just outside of Mt. Rainier, the next day they were mostly gone. I'll be anxious to see what you find up there! Good luck!

Moved
Moved from ID Request.

Parasite?
Maybe a parasite is exiting? I can't think of any normal midge activity. We have a picture of a midge with a worm emerging from its abdomen; I can't find it right now.

 
Not a parasite
No, it definitely wasn't a worm, it was a liquid. I watched it come out of several of the midges on two different nights. I have photos of the sequence of the droplet getting larger. As I mentioned, the midge seemed to dip the end of its abdomen into the liquid repeatedly once the droplet got large enough. There were probably 25 - 30 midges doing the same thing at the same time, too many to be a coincidental event. I guess I should have caught one and observed it for a while. I hope this mystery can be solved, it is really strange! I'm sure the other guests at the resort wondered why there was a flash going off every few seconds from my balcony while I was snapping photos! :)

 
Is this the one you were thinking of, John?

 
That's the one
That's the one. There may be a second too.

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