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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 center 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 behavior. 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.  Info: Wikipedia

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Zygiella x-notata

 

ORB WEAVERS/GARDEN SPIDERS

Orb weavers (Araneidae) are often brightly coloured with rounded abdomens, some with peculiarly angled humps or spines. However, there is considerable variation in size, colour and shape in this group. They are often recognized for building beautiful, large, round webs, on which they rest, head downward, waiting for prey. The webs consist of a number of radiating threads crossed by two spirals. The inner spiral begins in the centre, winds outward, and is made of smooth threads like the radiating threads. It covers only the central 1/3 of the web. The outer spiral begins at the edges and winds inward. It is made of more elastic, sticky threads, coated with a liquid substance. One of the largest and most commonly encountered members of this group is Argiope aurantia, the black and yellow garden spider and we have photos of them and other argiopes on their own page. 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)  
Shamrock Orb Weavers Orb Weaver Spiderlings Tropical Orb Weavers
Marbled Orb Weavers 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

ZYGIELLA X-NOTATA

31 May, 2016:
What do you think this one is scary but cool

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27 December, 2015:
Spider

 

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Reply: Looks like zygiella x-notata - glen

5 September, 2015:
Hi Greg Good Morning, hope you're having a great day. I have one more picture for you. This one looks totally different, can you identify please. Thank you Ed

 

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Reply: Looks like zygiella x-notata - glen

12 May, 2015:
Please identify

 

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Reply: Looks like a furrow spider but is zygiella x-notata - glen

5 February, 2015:
Hi Glen, I stumbled on your site while doing research to identify one of my backyard spiders in San Jose CA. I'm usually pretty good at identifying spiders I find, but this one stumps me. Web building, nocturnal, and less than 1cm in length. Thanks for the help. Terry I

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