Orb weaver spider

Orb weaver spiders are a large group of spiders in the family Araneidae, known for building wheel-shaped orb webs.

Orb weaver spiders are a large group of spiders in the family Araneidae, known for building wheel-shaped orb webs. They are widely distributed and commonly found in gardens, forests, fields, and other vegetation. Many species are beneficial predators that feed on flying insects.

Classification and diversity

Orb weaver spiders belong to the family Araneidae, one of the largest spider families. Sources report more than 2,800 to more than 3,000 species worldwide, with many genera.

Web-building behavior

Orb weavers are best known for constructing orb webs, the familiar circular, spiral-shaped webs suspended in open spaces among plants or structures. The term 'orb' refers to the round or circular shape of the web.

Habitat and distribution

Orb weavers occur in many habitats including gardens, forests, fields, shrubs, trees, and other vegetation. They are widely distributed across the world, though some sources state they are absent from Antarctica and the Arctic. In Canada, orb weaver spiders occur throughout the country and are commonly encountered in gardens and around homes during warmer months.

Ecological role

Orb weavers are important predators of flying insects and other small arthropods. They help control insect populations by catching pests such as flies, mosquitoes, beetles, and gnats, making them beneficial in gardens and agricultural settings.

Human interaction

Most orb weavers are generally non-aggressive toward humans and bites are uncommon. Bites can occur if they are trapped or threatened, but they are generally described as having low medical significance.