In addition to removing their food sources, regularly removing webs found around your home will deter the spiders from building their webs. Swapping your current exterior lights with yellow ‘bug lights’ can help limit the number of insects flying around your home at night. With their diet consisting mostly of insects, limiting the amount of lighting outside your home is a good way to deter not only the spiders but the large amount of insects they eat. Preventing an infestation of spiny orb-weaver spiders starts with making their food sources as scarce as possible. How to Get Rid of Spiny Orb-Weaver Spiders Paralyzing their prey with a bite, they then consume the insides of their prey. ![]() Common insects eaten by spiny orb-weavers include moths, beetles, mosquitoes, and flies. ![]() Like most other arachnids, their diet consists of the small insects they are able to capture in its web. Spiny Orb-Weaver Spider Habitatįound across the world and parts of the United State, distribution of these spiders range anywhere in the southern states, ranging from southern California to Florida.Īs for residential areas, the spiny-backed orb weaver is commonly found on trees and shrubs around houses and nurseries, particularly in citrus groves. Able to hatch in less than two weeks, it is crucial that an infestation is handled before multiple reproduction cycles occur on your property. Able to consist of 100 to approximately 300 eggs, seeing an egg sac is a sure sign that you are dealing with an infestation. Most active October through January, spiny orb-weaver spiders create ovate egg sacs on the underside of leaves and man-made structures, usually adjacent to the female’s web. Often building nests on the sides of houses, they are also found in citrus trees and shrubs that are common throughout Florida. The presence of these colorful spiders, as well as the large webs they spin, are the most obvious signs of a spiny orb-weaver infestation. While only females have large spines on their backs, males typically have four or five smaller humps. Their top, or dosaum, of the abdomen, is where their bright colors are found - typically white with black spots and red spines for Florida specimens.Īs for other specimens, they can be yellow with black spikes, or sometimes entirely black. Males are much smaller, ranging from 2 to 3 millimeters in length, and slightly longer in width.Īs their name suggests, these spiders are known for the six projections or ‘spines’ that protrude from the back of their abdomen. Organic Tick & Mosquito Control ProgramĮasily distinguished from the other species of orb-weaver spiders, the spiny-back species is identified by its colorful body.Īdult females range from 5 to 9 millimeters in length and 10 to 13 millimeters in width.Recluses ( Loxosceles sp.) in the Americas, Africa and the Mediterranean. Wandering spiders of Central and South America ( Phoneutria sp. America, the following spiders have the potential to be medically significant (list may not be comprehensive): If you aren't sure about your spider, please post and ask! By the way, science does not support that hobo spiders pose any threat. Note the limited range of the brown recluse. If you live in North America, there are only TWO types of spiders with the potential to cause serious harm:īrown recluse (a.k.a. The vast majority of spiders are harmless to humans. Otherwise, an innocent person or spider could get hurt. In those cases, leave it to people who know. An important exception is guesses about medically significant spiders (widows, recluses, etc). These are just tips - if you didn't get a chance to get these, post what you've got! The spider sleuths will do their best.Īmateurs are encouraged to guess. Photo tips: The most helpful views for identifying a spider include: Pictures of random red bumps or yucky patches will be removed. If you're asking "Is this a spider bite?" the answer is almost certainly no. There is no need to crosspost to /r/whatsthisbug - the same people identify spiders on both subreddits.ĭo not post pictures of "bites" unless you personally witnessed the spider biting the person. There are tens of thousands of species - this helps narrow it down. Include geographic location (country, state, province, region) with ID requests. Posts referencing that subreddit will be deleted. This is a "No Nope Zone." Hackneyed jokes referencing fire, "nopes," or gratuitously killing spiders will be removed or downvoted to oblivion. All things Arachnid: articles, photos, videos, and ID requests are welcome.
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