Bug Identifier
Cross orb-weaver (garden orb-weaver)
Community identification

Cross orb-weaver (garden orb-weaver)

Araneus diadematus

Order & Family
Araneae; Araneidae (orb-weaver spiders)
Size
Adults are typically 5–13 mm long, with females substantially larger than males; leg span may reach about 25 mm.
See this bug in the Encyclopedia

Natural Habitat

Gardens, woodland edges, shrubs, and buildings across much of the Northern Hemisphere. It commonly builds orb webs in vegetation or around windows and other structures.

Diet & Feeding

A predator of flies, moths, mosquitoes, and other small arthropods. It captures prey in sticky orb webs, then immobilizes and consumes them externally.

Behavior Patterns

Mostly nocturnal or crepuscular, often resting head-down at the web’s hub or in a nearby retreat. Females produce an egg sac in autumn; adults commonly die after reproduction, while young overwinter.

Risks & Benefits

Harmless to people and beneficial as a natural controller of flying insects. Bites are rare and generally cause only brief, localized irritation.