The Daddy Long Legs Spider: Household Danger or Household Helper?

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The Daddy Long Legs Spider: Household Danger or Household Helper?

It skitters across the floor and up the walls on its eight lengthy legs.  In its movement alone, the Daddy Long Legs Spider is the epitome of “creepy crawly”!  Subject of urban legend and even nickname confusion, the daddy long legs spider has become a very misunderstood household visitor.

Turns out the moniker “daddy long legs” actually refers to a couple of creatures, one being the harvestman, an outdoor-dwelling, long-legged bug that is actually not a spider at all!

In our Sacramento pest control region, the most common creature to be termed “daddy long legs” is known as the cellar spider.  With its tiny body in comparison to its long, nimbly segmented legs, it’s easy to see where this spider got its nickname. As part of the Pholcidae family, the cellar spider is a quiet, solitary feeder feasting on small insects and other spiders.  Harmless, and even helpful, cellar spiders are a common encounter in an average household.

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But haven’t you heard? “Daddy long legs are the most venomous spiders in the world, only their mouths are too small to bite through human skin!” Though this false rumor has become increasingly popular to the point of legend, the UC Riverside Spider Research Site (http://spiders.ucr.edu/daddylonglegs.html) provides evidence that any venom held by the daddy long legs only affects the smallest of creatures.  However, true scientific evidence about the toxicity of daddy long legs venom is hard to come by, as research would need to include milking the spider’s venom and injecting it directly into a human subject.  Based simply on frequent encounters and the lack of hospitalization reports, it’s probably safe to say daddy long leg spiders are harmless to humans.

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While they are handy in helping reduce the population of other spiders, these arachnids create messy, tangled webs that can be an unsightly nuisance. To avoid having these eight-legged friends become housemates, make sure to frequently clean to make their favorite places to stay, such as corners and gaps between furniture and walls, less hospitable. It is also helpful to eradicate their food source by exterminating other spiders in the vicinity; once its food source is removed, the daddy long legs will find elsewhere to take up residence. If you already have daddy long legs living with you, a recommended means of removal is to vacuum them up and throw away the contents in a sealed bag in an outdoor garbage can. This ensures any egg sacs or webs are picked up reduces the risk of having to deal with the next generation.

As with all crawling home invaders, when in doubt, consult a professional. Although daddy long legs are relatively harmless, other types of spiders in our Sacramento pest control region, such as the black widow, can produce nasty bites or even serious reactions, particularly to children or pets. (Visit http://earthguardpest.com/blog for more articles on spiders in your home.) Our licensed Earth Guard Pest Control professionals are always glad to help you identify the type of spider and answer your questions. Drop by our office or call us at 916-457-7605  or toll-free at 877-D-BUGIN-U (877-328-4468).

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Spider Bites Rare, But Can Be A Pain

BlackWidowHrGlassCS0471421Spiders, long a favored subject of sci-fi movies and horror novels, seem to provoke an especially strong yuck factor in humans. Although we know on an intellectual level that they have many beneficial purposes in the eco-system, including eating other insect pests, most of us don’t want them in our kids’ bedrooms.

Now that warm weather has arrived, spiders are proliferating outdoors and often making their way into our homes.

Of the more than 50,000 species of spiders, only a relatively few of them are able to bite humans, for the simple reason that most have mouth parts too small to break human skin. Only one type of California spider, the Black Widow, is considered to be a serious medical danger, particularly to small children, elderly or frail adults. (See our article, “Why Spiders Don’t Make Good House Guests,” for more information about Black Widow spiders.) Even at that, it has been more than 10 years since anyone died from a Black Widow bite, largely because effective treatments have been developed.

A few years back, we heard a lot in the news about brown recluse spider bites, whose bite can be fatal or create serious, debilitating injuries. Brown recluse spiders are found in the Southern United States and do not live in California, although there are occasional reports of one having hitched a ride on a moving van and showing up here. A cousin of the brown recluse, the South American native Loxosceles laeta, has been spotted in Los Angeles County. Another cousin, the Lososceles deserta, or desert recluse, is found as far north as Merced and Fresno counties, but not in our Sacramento pest control region.

One source of confusion is that it can be hard to distinguish one type of spider from another. Even the distinctive shiny black of the Black Widow can vary, and immature females may have lighter brownish and variegated markings.

A number of spiders that are sometimes found in or around our homes may be mistaken for a brown recluse. And while their bites are not nearly as serious as that of the brown recluse, they can leave a painful wound that resembles a brown recluse bite as well as other symptoms. These include the running spider, jumping spider, wolf spider, tarantula, sac spider, orbweaver spider and hobo spider, also known as the northwestern brown spider.

The household spiders most commonly encountered by our Sacramento pest control technicians are the yellow sac spider and the hobo spider. In fact, although its bite is not fatal, the yellow sac spider is believed to be responsible for more human bites than any other species.

Symptoms of a spider bite may include pain and burning at the site of the bite, a circle of pale skin surrounding the red center of the bite, which may form a blister or ulcer and burst. Care should be taken to keep the bite clean and disinfected; seek medical attention immediately if infection sets in. In some cases, the victim may develop a red, itchy rash within the first three days, muscle and joint pain, fever, chills, swollen lymph nodes, headache, nausea and vomiting. Hobo spider bites, in particular, may cause a painful, open wound that is slow to heal and is frequently misidentified as a brown recluse bite. See your doctor if the bite becomes infected or healing is delayed. Wolf spider bites can result in blackening of the skin in the bite area, and pain and swelling may persist for 10 days or longer. In most cases, symptoms of a spider bite will go away without treatment within a week to 10 days.

The best way to determine the type of bite is to trap the critter who did it, if you can do so safely, or collect it in a plastic bag if it has been killed, and take it to a pest control professional or University extension facility for identification. But many times, the victim doesn’t even know he or she has been bitten until a sting is felt or other symptoms develop. Stings or bites from other insects, poison oak or staph infections are often mistaken for spider bites. In cases where the bite is believed to be from a Black Widow or brown recluse spider, seek medical help immediately.

Here is some additional advice for treatment of spider bites from the California Poison Control System:

  • Wash the site of the spider bite well with soap and water.
  • Apply a cool compress or ice pack over the spider bite location.
  • Over-the-counter pain relievers may be used to relieve symptoms. (Remember, do not give aspirin to children; use acetaminophen or ibuprofen instead).
  • Call the doctor or seek emergency treatment if the victim is a young child, if you think the bite may have been from a black widow or brown recluse spider, if any signs of an allergic reaction occur, if the bite area becomes infected, or if the victim develops a rash or severe illness.
  • If possible, retrieve the spider and bring it with you to the health care practitioner so that it can be definitively identified.
  • A tetanus booster shot may be necessary, depending upon the date of the patient’s last immunization.

Remember, it is difficult to control spiders with over-the-counter pesticides. Reducing clutter, de-webbing, cleaning in corners and sealing cracks and crevices where spiders can get in may help. If you need help with uninvited spiders in your home or place of business, call our trained Sacramento pest control professionals at 916-457-7605 for a same-day inspection, free estimate and information about our integrated pest management services.

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