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Zygiella x-notata

Zygiella x-notata

Zygiella x-notata

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Superphylum: Ecdysozoa
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Arachnida
Ordo: Araneae
Subordo: Araneomorphae
Infraordo: Araneomorphi
Series: Entelegynae
Superfamilia: Araneoidea
Familia: Araneidae
Subfamilia: Araneinae
Tribus: Dolophonini
Genus: Zygiella
Species: Zygiella x-notata
Subspecies: Z. x. chelata - Z. x. percechelata

Name

Zygiella x-notata (Clerck, 1758: 46) ZooBank
Original genus: Araneus


Synonyms

Aranea litterata Olivier, 1789
Aranea calophylla Walckenaer, 1802
Zilla bösenbergi Keyserling, 1878
Zilla californica Banks, 1896
Zilla gigans Franganillo, 1913
Pseudometa biologica Chamberlin, 1925
Larinia maulliniana Mello-Leitão, 1951


References

Clerck, C. 1758: Aranei Svecici, ... Stockholmiæ. (L. Salvii). [publication date: 1 January 1758, deemed so by ICZN (1999: Art. 3.1)] AnimalBase ZooBank
find all Wikispecies pages which cite this reference

Vernacular names
日本語: タイリクキレアミグモ

Zygiella x-notata is a spider in the family Araneidae.

Description

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. Z. x-notata is a warmth-loving animal.
Web

Adult spiders build an orb-web 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 hideout. 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.
Feeding behavior

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 center, to orient itself. The killed and wrapped prey is moved to the hideout.
Reproduction

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.

References

Le Guelte, Louis: Structure de la toile de Zygiella x-notata Cl. 1966.
Levi, Herbert Walter: The orb-weaver genus Zygiella (Araneae, Araneidae). in Bulletin of the Museum of Comparative Zoology.
vol. 146, no. 5, Cambridge 1974. ISSN 0027-4100
Weissmann, Monika: Web-building and prey-capture in two orb-weavers. 1987.

Biology Encyclopedia

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Source: Wikipedia ,Wikispecies: All text is available under the terms of the GNU Free Documentation License