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  Gordian-3230r-72.jpg - Gordian or Horsehair worm ( Nematomorpha  sp.) on Strathmoor at Kenilworth, Oakland, CA on Apr. 17, 2017.  Photo taken by Alex Pierce, who says: They are called horsehair worms and come out after the rain.  They wave around in the air.  At first you think you are seeing things.   Range in size from 50-100 mm (2-4 inces) long and 1-3 mm in diameter.  There are over 351 freshwater species.   Gordian refers to the knot. They can tie themselves in knots.  They are parasites to crickets and grasshoppers.  Otherwise they are not harmful to humans or your garden.      
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Gordian or Horsehair worm (Nematomorpha sp.) on Strathmoor at Kenilworth, Oakland, CA on Apr. 17, 2017. Photo taken by Alex Pierce, who says: They are called horsehair worms and come out after the rain. They wave around in the air. At first you think you are seeing things. Range in size from 50-100 mm (2-4 inces) long and 1-3 mm in diameter. There are over 351 freshwater species. Gordian refers to the knot. They can tie themselves in knots. They are parasites to crickets and grasshoppers. Otherwise they are not harmful to humans or your garden.
Photographer: Alex Pierce | Camera: Apple iPhone 5c | Date: 4/17/17, 10:12 AM | Resolution: 396 x 528 | ISO: 50 | Exp. Time: 1/149s | Aperture: 2.4 | Focal Length: 4.0mm (~119mm)
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