orbweaver

An orbweaver is a spider belonging to the family Araneidae that typically builds a wheel-shaped orb web to capture prey. This diverse group includes hundreds of species and many common genera such as Argiope, Araneus, Neoscona, Cyclosa, and Gasteracantha. Orbweavers are found worldwide in a range of habitats, including forests, grasslands, and gardens. They vary in size, color, and pattern, and many species have characteristic markings that aid in species identification.

Web construction and hunting are central to the orbweaver’s ecology. The typical web is vertically oriented, with a framework of radial lines and a capture spiral of sticky silk. These spiders often rebuild or repair their webs daily or after they are damaged. Some species decorate the web with made flags, debris, or silk patterns, which may serve as camouflage or distract predators. Orbweavers usually wait in or near the center of the web, sensing vibrations to detect passing prey such as flying insects.

Behavior and life history vary among species. Many orbweavers are nocturnal or crepuscular, while some genera like Argiope are active during the day. Females are generally larger than males, and mating involves careful approach and signaling to avoid aggression. Eggs are laid in silk sacs and may overwinter in temperate regions. In warm climates, several generations can occur each year.

Ecologically, orbweavers play a role in controlling insect populations and contribute to biodiversity. They are largely harmless to humans and are often appreciated for their striking appearance and web-building behavior.