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Entomology (Study of Bugs)/Floating on still water



Squiggly 2
Squiggly 2  
The past week I keep finding tons of these squiggly line things on top of water in my pool and out of pool. These small gnat type flies I  think I identified the gnats as fungus gnats are swarming these squiggly lines. so i think it might have something to do with each other. I live in Hope Mills, North Carolina. Any help in identifying these would be greatly appreciated. I also already spoke to pool services about it, they said didnt look like algae. Thanks again. I attached a picture.

Dear Kristina - I will admit straight off that I have never seen anything exactly like these structures, but they most definitely are not fungus gnat eggs - see
for an image. The only egg deposits that I have seen with a similar shape are snail eggs, and those usually are on a solid substrate and are much larger than these. Rather, I suspect that they could be a colonial microbe/algae of some sort, You might try contacting your county office of North Carolina's Cooperative Extension Service to see if anyone there can offer an opinion - see for contact information.

Sorry not to be of more definitive assistance,

Entomology (Study of Bugs)

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Ed Saugstad


Will accept most questions in general entomology, including those related to medical entomology, taxonomy, ecology, arthropod surveillance, and pest management. If you are requesting a 'mystery bug' identification, PLEASE either attach an image to your question, or post an image on a web page (such as Flickr) so that I can look at it, as verbal descriptions frequently are insufficient for a definitive identification.


21 years in the U.S. Army as a medical entomologist; duties varied from surveillance of pest populations (including mosquitoes, cockroaches, ticks, and stored products pests) to conducting research on mosquito-virus ecological relationships and mosquito faunal studies. Ten years as a civilian analyst for the Department of Defense, primarily on distribution of vector-borne diseases worldwide. Limited experience on surveillance of agricultural insects in North Dakota and Indiana.

Entomological Society of America, West Virginia Entomological Society, Society for Vector Ecology, National Speleological Society, West Virginia Association for Cave Studies.

American Journal of Public Health, Contributions of the American Entomological Institute, Japanese Journal of Sanitary Zoology, Journal of Economic Entomology, Mosquito News, and Mosquito Systematics.

B.S. in entomology from North Dakota State University in 1963, M.S. in entomology from Purdue University in 1967.

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