Maine’s forest landscapes and varied climates make it a haven for a diverse range of wildlife, including several species of spiders. While most spiders in Maine are harmless and even beneficial in controlling pest populations, their presence can still be unsettling for many homeowners. Understanding the types of spiders commonly found in Maine can help you better appreciate these arachnids and know when it might be time to call in professional pest control.

Common Spiders in Maine

Here are some of the most frequently encountered spider species in Maine:

1. Common House Spider (Parasteatoda tepidariorum)

• Description: This small, brown spider is often found in human dwellings. It has a rounded abdomen with variable patterns, which can include spots and stripes.
• Habitat: Common house spiders typically build their webs in corners, basements, and closets. They are often found near windows and doors, where they can catch flying insects.
• Behavior: These spiders are generally harmless to humans and play a significant role in controlling indoor insect populations.

2. Wolf Spider (Family: Lycosidae)

• Description: Wolf spiders are large, robust spiders with excellent eyesight. They are typically brown with a distinctive pattern of stripes or spots on their bodies.
• Habitat: These spiders do not build webs. Instead, they are ground-dwelling hunters found in leaf litter, grass, and under stones. They may occasionally enter homes, especially during colder months.
• Behavior: Wolf spiders are not aggressive and bites are rare. They are beneficial as they hunt and consume other pests.

3. Black and Yellow Garden Spider (Argiope aurantia)

• Description: Known for its striking appearance, this spider has a black and yellow patterned abdomen and long, black legs.
• Habitat: It builds large, circular webs in gardens, fields, and other outdoor areas.
• Behavior: This spider is non-aggressive and poses no threat to humans. It helps control garden pests by catching insects in its web.

4. Northern Black Widow (Latrodectus variolus)

• Description: Northern black widows are glossy black spiders with a distinctive red hourglass shape on the underside of their abdomen. They are smaller and less common than other spiders in Maine.
• Habitat: They prefer dark, secluded areas such as woodpiles, sheds, and basements.
• Behavior: Black widow bites can be dangerous due to their potent venom. However, they are generally shy and only bite in self-defense.

5. Jumping Spiders (Family: Salticidae)

• Description: These small, compact spiders are often brightly colored or patterned. They have large, forward-facing eyes that give them excellent vision.
• Habitat: Jumping spiders are commonly found on walls, windowsills, and plants, both indoors and outdoors.
• Behavior: Known for their characteristic jumping ability, these spiders are curious and harmless to humans.

6. Fishing Spiders (Dolomedes spp.)

• Description: Fishing spiders are large and can have a leg span of up to 3 inches. They are typically brown or gray with banded legs.
• Habitat: These spiders are often found near water sources like streams, ponds, and wetlands. They can also be found in basements or damp areas in homes.
• Behavior: Fishing spiders are excellent swimmers and can even walk on water. They are not aggressive towards humans.

Identifying and Managing Spider Infestations

While most spiders in Maine are harmless and beneficial, there are times when their presence can become problematic, especially if they enter living spaces in large numbers. Here are some tips for managing spider populations in your home:

1. Regular Cleaning:

Keep your home clean and free of clutter, which can provide hiding places for spiders. Regularly vacuum corners, basements, and other secluded areas.

2. Seal Entry Points:

Spiders can enter homes through cracks, gaps, and openings. Inspect your home for potential entry points and seal them with caulk or weather stripping.

3. Remove Webs:

Regularly remove spider webs from your home and yard to discourage spiders from settling in.

4. Outdoor Maintenance:

Trim vegetation and remove debris from around your home’s perimeter to reduce outdoor spider habitats.

5. Reduce Insects:

Since spiders feed on insects, reducing the overall insect population in your home can make it less attractive to spiders.

Call the Professionals

While many spiders in Maine are harmless and even beneficial, their presence can still cause discomfort and concern. If you’re dealing with a spider infestation or are unsure about the types of spiders in your home, it’s best to seek professional help. Atlantic Pest Control is equipped with the expertise and tools to handle spider infestations effectively and safely. Our team can provide comprehensive inspections, identify the species, and implement targeted treatments to ensure your home remains spider-free. Contact Atlantic Pest Control today to schedule a consultation and take the first step toward a pest-free home.