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This mayfly (Ephemeroptera) landed on my shirt Wednesday evening. It is possibly one of the burrowing mayflies (Ephemeridae). Perhaps someone knows its ID: http://www.flickr.com/photos/92981528@N08/9319239733/ I nudged it onto a paper to show its 2 tail filaments using the flash: http://www.flickr.com/photos/92981528@N08/9319237905/ The really interesting thing about this mayfly was how it maintained its direction. Every time I moved the paper for a better view it would immediately move back to its original bearing (approximately south) just like a compass needle. I have no idea what it could be orienting towards (direction, sun, wind, smell) or if this is normal for mayflies and perhaps other insects that emerge en masse to breed (such as flying ants). Nancy
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