Water sample collected from an open canal in Rosales, Chihuahua, close to the town Barranco Blanco. The location is indicated.
The sample was collected on January 15th at 13:02 and the images were acquired on January 17th.
I was perplexed by this until it turned on its side! 2 individuals. Photos taken using a Foldscope microscope. The aperture of mine (diameter of black circle) measures ~1.5 mm.
Water sample taken from Fahrens Creek.
Approximately 615 um long, found in creek fresh water.