Pennsylvania is home to a diverse array of spiders, many of which play a pivotal role in maintaining the ecological balance. While some species can inflict a vicious bite, causing significant discomfort to humans and pets, the majority of spiders in the state are harmless to humans and do not require any special pest control measures. The following article provides an overview of the most common spiders encountered in the Commonwealth.
American House Spider
The American house spider, scientifically known as Agelenopsis aperta, is a common sight in many homes in the region. These spiders are known for their webs, which are typically located in dark, secluded places such as attics, basements, and closets. While they are generally harmless, the webs can sometimes become overly tangled and may be unsightly.
Long Bodied Cellar Spider
Also known as Daddy Longlegs, this spider is identified by its long, slender legs and relatively small body. Commonly found in basements and other dark, secluded areas, the long-bodied cellar spider is generally not considered to be dangerous to humans.
Yellow Garden Spider
The yellow garden spider, scientifically named Araneus scutellatus, is a medium-sized spider with distinctive black and yellow coloration. These spiders are often found in lawns and gardens, where they construct large webs that can get tangled in grasses. While they typically do not bite humans, they may inadvertently trap themselves indoors.
Grass Spider
Grass spiders, also known as Funnel Web Weavers, are widespread in North America during the summer months. These spiders construct funnel-shaped webs underneath rocks, in low-growing bushes, and near foundations. Despite their speed and agility, grass spiders are not known to bite humans.
Wolf Spider
Wolves, in the broadest sense, refer to any member of the family Lycosidae, which encompasses numerous spider species. In Pennsylvania, these large hunting spiders are most commonly observed from spring to fall. Although they do not typically build webs, they are known to chase down their insect prey with powerful mandibles.
Barn Funnel Weaver
The Barn Funnel Weaving Spider, scientifically named Araneus angulates, is a common spider species in Pennsylvania. These spiders are known for their speed and agility, able to move quickly from one part of the web to another. They are most often found in basements or between logs on the ground.
Red-spotted Orbweaver
Also known as the Southern Black Widow, the red-spotted orbweaver, scientifically named Latrodectus mactans, is a large, dark่่ with a distinctive hourglass-shaped pattern on its abdomen. While they are not typically aggressive, their bite can cause local swelling, redness, and muscle spasms. It is important to seek immediate medical attention if bitten by a red-spotted orbweaver.
Woodlouse Spider
Woodlouse spiders, scientifically named Dysdercus spp., feed on woodlice and are most common in places where there are plenty of woodlice available, such as leaves, rocks, and burrows. While they do not bite humans, their bloodied bodies may cause noticeable cuts to human skin during their feeding.
Other Common Spiders
In addition to the aforementioned spiders, Pennsylvania is also home to a variety of other common spiders, including the Common House Spider, which constructs messy webs on buildings and in sheds, stables, and barns; the Six-Spotted Orbweaver, which is common in homes but often goes unseen; and the False Widow, which is often misidentified as the Black Widow due to its similar appearance.
##Despite their sometimes intimidating appearance, the majority of spiders encountered in Pennsylvania are harmless to humans and do not require any special pest control measures. However, it is important to be aware of the potential risks associated with certain species, such as the Black Widow and Brown Recluse, and to take appropriate steps to protect oneself and pets, should they become bitten. If you suspect that you have a่่ infestation, it is recommended to contact a professional pest control service for a thorough inspection and treatment.
