Common Spiders in Colorado Springs: Identification & Control

Walking outside in Colorado Springs, especially near the foothills or along the Fountain Creek corridor, you are likely sharing your space with a variety of spider species. While the sight of a spider can provoke an immediate reaction for many, understanding these creatures reveals a world of ecological benefit and fascinating adaptation. Most spiders you encounter are not just passing through; they are local residents setting up shop in the diverse environments this region offers, from Pikes Peak foothills to suburban backyards.

Common Ground-Dwelling Spiders

Several spider species in Colorado Springs are frequently found living on the ground or in low vegetation, where they actively hunt for their prey. These arachnids are integral to pest control, keeping populations of insects like mosquitoes and beetles in check. Identifying them correctly can alleviate unnecessary fear, as the vast majority are harmless to humans and simply go about the business of surviving in the local ecosystem.

Wolf Spiders (Family Lycosidae)

Wolf spiders are perhaps the most commonly observed hunters in the area, particularly during the late summer and fall. Unlike web-building spiders, wolf spiders rely on their keen eyesight and speed to chase down insects. They are robust, often dark-colored spiders that carry their egg sacs attached to their spinnerets, and the young spiders can sometimes be seen riding on the mother's back after hatching. Despite their imposing appearance and fast movements, they are non-aggressive and bites are rare, usually occurring only if they are directly handled.

Fishing Spiders (Family Pisauridae)

Found near water sources like streams, ponds, and even irrigation ditches, fishing spiders are large, aquatic hunters that can walk on water surfaces. They are often mistaken for wolf spiders due to their similar coloring, but they are typically found in wetter environments around Colorado Springs. These spiders are capable of delivering a painful bite if provoked, but they generally avoid humans and play a vital role in managing insect and tadpole populations in their aquatic habitats.

Web-Building Spiders of the Region

Web-building spiders are perhaps what most people picture when they think of spiders, and several species in Colorado Springs are skilled architects. These spiders are not aggressive hunters; instead, they construct intricate sticky traps to capture flying insects. While they may seem like a nuisance when they establish webs on the sides of homes or in garages, they are generally reclusive and contribute significantly to reducing the insect population around your property.

Orb-Weavers (Family Araneidae)

The iconic spiral wheel-shaped web is the trademark of orb-weaving spiders, and the spotted orbweaver is a standout in this category. These spiders are usually found in gardens, fields, and between buildings where they can find ample flying insects. They are masters of engineering, rebuilding their webs almost nightly if they are damaged. While they possess venom, their fangs are not capable of penetrating human skin, making them harmless despite their large size and striking appearance.

Sheetweb and Funnel Weavers (Family Linyphiidae & Agelenidae)

Smaller spiders in Colorado Springs often create sheet webs or funnel-shaped webs, particularly in the cooler months or in grassy areas. Sheetweb spiders hang upside down in a small sheet of silk, dropping down to capture prey that lands on it. Funnel weavers, like the common grass spider, build a flat sheet with a funnel leading to a hiding spot, where they wait for prey to wander by. These spiders are incredibly common and are rarely seen indoors unless accidentally carried inside on outdoor items.

Less Common but Notable Species

While the spiders mentioned above make up the bulk of the local population, Colorado Springs is also home to a few species that attract attention due to their size or specific habits. Understanding these species helps differentiate between common yard inhabitants and the rarer finds that might warrant a closer look from a professional exterminator or pest control specialist.

Black Widows (Family Theridiidae)

The black widow is the spider most people fear, and while its venom is medically significant, encounters are less common than one might think. In Colorado, the western black widow is the primary species, identifiable by the distinctive red hourglass marking on the underside of a shiny black abdomen. They prefer undisturbed areas such as woodpiles, under eaves, or in outdoor furniture where they can build messy, irregular webs. Wearing gloves when moving items stored for long periods is the best preventative measure against being bitten.

Prevention and Coexistence

Living with spiders in Colorado Springs is largely about managing the environment to reduce their food sources and harborage spots. Since spiders follow insects, controlling indoor and outdoor lighting can significantly reduce the insects that attract them. Sealing cracks around windows and foundations removes the cool, dry shelter they seek, particularly as the weather turns colder and they look to overwinter indoors. Remember that the spiders you see are part of the natural balance; they are efficient predators that keep the insect population in check, making them valuable allies in the yard rather than just pests to be eliminated.