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Nuctenea umbratica Female Nuctenea umbratica. (Found: Nyköping Sörmland Sweden. 2005 ) Male Nuctenea umbratica. (Found: Nyköping Sörmland Sweden. Sep 2007 ) Female Nuctenea umbratica, head-on view. (Found: Nyköping Sörmland Sweden. 2005 ) Male Nuctenea umbratica, head-on view. (Found: Nyköping Sörmland Sweden. Sep 2007 ) Female Nuctenea umbratica, side view. (Found: Stenkyrka Gotland Sweden. June 2010 ) Female Nuctenea umbratica. (Found: Nyköping Sörmland Sweden. 2005 ) Close-up of the eyes of a male Nuctenea umbratica from above. (Found: Nyköping Sörmland Sweden. Sep 2007 ) Young Nuctenea umbratica upside down. Notice the two light dots under the abdomen. (Found: Nyköping Sörmland Sweden. 2006 ) Male Nuctenea umbratica from below. (Found: Nyköping Sörmland Sweden. Sep 2007 ) Subadult male Nuctenea umbratica from below. (Found: Nyköping Sörmland Sweden. May 2008 ) Palps of a male Nuctenea umbratica. (Found: Nyköping Sörmland Sweden. Sep 2007 ) Close-up of the epigyne of a female Nuctenea umbratica. (Found: Stenkyrka Gotland Sweden. June 2010 ) Subadult male Nuctenea umbratica, 8 mm. (Found: Nyköping Sörmland Sweden. May 2008 ) Female Nuctenea umbratica, 9 mm. (Found: Stenkyrka Gotland Sweden. June 2010 ) Nuctenea umbratica. Usually hides during daytime and comes forward by sunset. (Found: Stenkyrka Gotland Sweden. June 2010 ) Droplets in a Nuctenea umbratica web. (Found: Nyköping Sörmland Sweden. Apr 2009 )

Facts: Family: Araneidae Scientific name: Nuctenea umbratica Common name: Walnut orb-weaver The Walnut orb-weaver, Nuctenea umbratica, is quite flat. It hides under cracks in the bark of trees during the days and spins a small orb web in the night. It can sustain as low temperatures as minus 19 degrees Celsius.

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Disclaimer. I am a photographer, not an arachnologist. Although I spend a lot of time on spider identification, I can not give a 100% guarantee on the id of the spiders.