Orb weaver spiders have made their return in San Diego, just in time for the Halloween season. These spiders are known for their large size, colorful appearance, and intricate webs that can be found in gardens, fields, and forests across the globe. In San Diego, residents may have already had the experience of walking into one of these webs.
While orb weavers do not have specific seasons, they are more prominent during late summer and fall. This is because their life cycle begins in the spring when they hatch, mate during the summer and autumn months, and then lay eggs that will hatch in the winter. This year, there have been numerous sightings of orb weavers in San Diego, with many people sharing videos and photos of these spiders in their backyards.
Some of the common species of orb weavers found in the area include the yellow garden spider, western spotted orb weaver, round-shouldered orb weaver, silver garden orb weaver, and banded spotted orb weaver. Despite the different species, all orb weavers create the same type of distinctive spider silk web with concentric rings and intersecting lines. These webs serve as both a shelter for mating and a trap for catching prey, usually small insects.
Sightings of orb weavers tend to increase during dry months following wet winters, as the abundance of vegetation and prey allows these spiders to thrive. Although orb weavers may appear intimidating due to their size, they are not harmful to humans unless provoked. In order to avoid accidentally walking into their webs, county vector control officials suggest using a stick or keeping a hand out as a precaution. It is also advised to avoid walking between objects that may serve as anchor points for the spider’s web.
Overall, orb weaver spiders play a vital role in maintaining the ecosystem by controlling insect populations. While they may startle some people with their webs, these spiders are fascinating creatures that contribute to the biodiversity of San Diego’s natural environment. So, the next time you see an orb weaver spider spinning its web, take a moment to appreciate the beauty and complexity of nature’s design right in your own backyard.
