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Spider Photos -  Zygiella x-notata

Zygiella x-notata (sometimes known as the Missing Sector Orb Weavers or the silver-sided sector spider is a spider in the family Araneidae.  Z. x-notata females are up to 11mm in size, males up to 7mm. The prosoma is yellow-brown, with a leaf-like mark on the opisthosoma. In moderate climate, adults appear from July to October, sometimes even into December. In warmer regions, they are active all year. This spider builds its web mostly into window frames, but can also be found on walls, fences, or under the bark of old trees. It is very common around boats and docks throughout the world. Adult spiders build an orb-web usually with two sectors without connecting threads in one of the two upper corners. The signalling thread in the middle of these sectors leads to the spider's retreat. In the evening and at night, however, the spider sits in the centre of the web. It renews the web in the morning hours. A normal web consists of about 25 to 30 radial threads. Young spiders, and sometimes adults, build webs without the free sectors, especially if the angle between signalling thread and radii gets too big. Catching prey is instinctive in Zygiella in which it differs from other Araneidae, who have to learn this behaviour. When alerted by movements of caught prey, the spider moves along the signalling thread into the web centre, to orient itself. The killed and wrapped prey is moved to the hideout. Females and males can often be seen together in one nest. Males with better web-building ability are more attractive to females. Before mating, the male plucks and drums on a special thread attached to the web of the female. The eggs overwinter in a cocoon, the spiderlings hatch next spring.
Information - Wikipedia
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ZYGIELLA X-NOTATA

Zygiella x-notata (sometimes known as the Missing Sector Orb Weavers or the silver-sided sector spider is a spider in the family Araneidae.  Please select a section below.
Garden Orb Weavers (1) Garden Orb Weavers (2) Garden Orb Weavers (3)
Garden Orb Weavers (4) Garden Orb Weavers (5) Garden Orb Weavers (6)
Garden Orb Weavers (7) Garden Orb Weavers (8) Garden Orb Weavers (9)
Garden Orb Weavers (10) Garden Orb Weavers (11) Garden Orb Weavers (12)
Garden Orb Weavers (13) Garden Orb Weavers (14)  
  Shamrock Orb Weavers Orb Weaver Spiderlings
Tropical Orb Weavers Marbled Orb Weavers (1)  Marbled Orb Weavers (2)
Giant Lichen Orb Weavers Golden Silk Orb Weavers Cat Face Orb Weavers
Araneus Alsine-like/Iviei Araneus Diadematus Araneus Nordmanni
Star Bellied Orb Weavers Furrow Spiders Arabesque Orbweaver
Araneus Cingulatas Green Orb Weavers Zygiella x-notata

GARDEN ORB WEAVERS - Unclassified

14 April, 2015
Hi, I recently found a spider outside my home in Maryland, USA and am having trouble identifying it. A picture is below. For size reference, it is sitting on a screen door in this picture. Any and all help is appreciated, thanks!

Eric F.

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Reply:  Thanks for identifying this one, I have had a few similar ones recently - glen

14 April, 2015
Hi Glen, I had never heard of furrow spiders before, and it is a close resemblance - - - but I was still unsure. While researching another spider today, I came across this which I now believe is the species of my little backyard buddy - - - Zygiella x-notata (original photo attached): http://bugguide.net/node/view/459652 The front leg structure, coloration of the abdomen, coloration of the cephalothorax, the missing web segment, and of course, they are found on the west coast.  Thanks, Terry

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