Araneus diadematus

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  Araneus diadematus

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  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

• 

  Araneus diadematus

Araneus diadematus

Araneus diadematus, commonly known as the European garden spider, cross orb-weaver, or diadem spider, is a species of orb-weaver spider found across Europe and North America. It is one of the most common and recognizable spiders in these regions due to its distinctive cross-like markings on the abdomen.

Description

Araneus diadematus exhibits sexual dimorphism, with females being significantly larger than males. Females typically measure between 6.5 to 20 mm in body length, while males are smaller, ranging from 5.5 to 13 mm. The coloration of these spiders can vary from light yellow to dark grey, but they are most commonly brown with a characteristic white cross on the dorsal side of the abdomen, formed by a series of white spots.

Habitat

This species is commonly found in gardens, woodlands, and hedgerows. Araneus diadematus constructs large, wheel-shaped webs, which are often found in open spaces between trees and shrubs. These webs are used to capture prey, primarily flying insects such as flies, mosquitoes, and moths.

Behavior

Araneus diadematus is primarily active during the late summer and autumn months. The spider is known for its web-building skills, creating intricate orb webs that can be up to 40 cm in diameter. The spider typically sits in the center of the web, waiting for prey to become ensnared. Once an insect is caught, the spider quickly immobilizes it with silk before consuming it.

Life Cycle

The life cycle of Araneus diadematus begins with the laying of eggs in the autumn. The female produces an egg sac, which she attaches to a secure location. The eggs hatch in the spring, and the young spiderlings disperse by ballooning, a process where they release silk threads to catch the wind and travel to new locations. The spiders mature over the summer and reach adulthood by late summer or early autumn.

Predators and Defense

Araneus diadematus has several natural predators, including birds, wasps, and other larger spiders. To defend against these threats, the spider may drop from its web and hide in nearby foliage. The coloration of the spider also provides camouflage against predators.

Related pages

• Orb-weaver spider
• Spider anatomy
• Spider silk
• Arachnid