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Massive Centipedes Can Invade Your Home Through Indoor Drains

Massive Centipedes Can Invade Your Home Through Indoor Drains

Arizona is home to some of the largest sized centipede species in the world. The giant desert centipede in Arizona grows to be six to eight inches in length, and the common desert centipede grows to be between four and five inches in length. The giant desert centipede can be recognized for its black head and orange tail, while the smaller variety is usually tan to brown in color. While these two centipede species inflict venomous and very painful bites, bites rarely cause serious reactions. Unlike the common house centipede, which is often encountered in homes all over the United States, desert centipedes are not chronic home-invaders in Arizona. That being said, large desert centipedes have emerged from sink and shower drain within houses. While this claim is argued on many websites, two entomologists, Richard Fagerlund and Johnna Lachnit, have stated that centipedes may enter homes through drains after invading septic tanks.

Although desert centipedes do not invade homes in the southwest as often as house centipedes, many residents of the region have found large desert centipedes indoors, particularly in beds. One desert-dwelling resident described a situation in which a large centipede emerged from his kitchen sink while washing dishes. He claimed that the specimen was around six inches, which he was able to determine easily after the centipede bared its entire body on one of his dinner plates. Another resident claimed that a large centipede crawled up her leg after it had emerged from her bathtub drain while showering. The two above named entomologists claim that centipedes can enter septic tanks before invading homes through drains. These two entomologists recommend covering indoor drains with commercially available drain covers, and if these are not on hand, placing a zip-lock bag over drains will suffice. It is also important to run hot water before retiring to bed each night, as nocturnal centipedes may emerge from drains before invading other areas of a home while residents sleep.

Have you ever witnessed an arthropod emerge from an indoor drain?



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Mayflies And Caddisflies Can Trigger Severe Allergic Reactions In Humans

The insects known as caddisflies and mayflies are abundant in Arizona. These two insects dwell and breed near natural water bodies, and it is not uncommon for mayflies and caddisflies to swarm large populated areas located near lakes and rivers. For example, back in 2015, massive swarms of caddisflies terrorized residents of Bullhead City. This Arizona city is located near the Colorado River, so residents were used to occasional caddisfly swarms. However, the summer of 2015 saw repeat swarms that were so unpleasant that real estate prices in the city dropped drastically, as nobody wanted to retire to the city knowing about the swarms. Mayfly swarms can also be a nuisance for Arizona residents, as one resident of Oak Creek reported a mayfly swarm as large as 30 by 30 meters. At the moment, residents located near Lake Erie in Ohio are being bombarded with repeat mayfly swarms that are literally covering houses. These swarms are large enough to be picked up on weather radar. While it is well known that both caddisflies and mayflies can be a nuisance, their negative effect on human health is not so well known. Much like cockroaches and dust mites, mayflies and caddisflies are two arthropods that can induce allergic reactions in sensitive individuals. In some cases, these insects can induce asthma attacks, hives, skin irritation and eczema.

Given the caddisflies appearance, it should not be surprising to learn that they are closely related to moths and butterflies. Much like moths and butterflies, caddisfly wings are covered in easily detachable scales that serve as airborne allergens. These scales are a source of both indoor and outdoor allergens, and inhaling these scales can induce asthma attacks. Mayflies, on the other hand, do not spread airborne allergens; instead, the discarded skins shed by mayflies serve as environmental allergens. Although their discarded skins are not as readily airborne as the dust-like scales on caddisfly wings, these discarded skins can be blown about in the wind, making it easy for people to inhale this allergen. Mayfly allergens have been shown to induce seasonal asthma symptoms and eczema. Once case report describes in individual who developed “huge” hives as a result of making contact with mayfly allergens. Keeping these insects out of homes is particularly important to prevent the development of allergies or the worsening of existing allergies.

Have you ever witnessed a caddisfly or mayfly swarm?



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The Most Frightening Spiders That Are Likely To Show Up Within Arizona Yards, Gardens And Homes

When summer arrives and the weather warms up, all the creepy crawlies that people would rather not have anywhere near them come out of their hiding spots to bask in the glorious desert sun. As you might have guessed, the critters people most fear, those terrifying desert spiders, are the ones that come out in droves to enjoy the nice weather. Arizona is known for it’s rather frightening arachnids, some that are definitely deserving of your caution and respect, and others that look quite dangerous, but are really quite harmless. So, what spiders should you be wary of that you are likely to spot in your yard or home this summer?

The first of the two spiders that people need to be wary of at this time year is the infamous black widow, known for its black body with the red hourglass shape on its abdomen. At least they are easily recognized, if not exactly a creature you want to spot around your home. Both male and female black widow spiders during all the stages of their life cycle, even the eggs, so any that you find need to be very carefully removed. Their venom is a nerve toxin, so it acts on the nervous system. The initial bite might not even be felt, but can cause you to feel muscle pain, difficulty breathing, among other symptoms as the venom spreads. Black widow webs do not look like the neat, circular webs of other spider species, but rather messy-looking, with strands branching out in all different directions. Thankfully, black widow spiders are not usually found inside homes, and tend to appear in outbuildings such as sheds or garages. You should always shake out any shoes or clothing before putting them just to be safe.

The other spider you should be on the watch for is the Arizona brown spider, often mistaken for brown recluse spiders. They both look and have similarly dangerous venom, however, and so are often mistaken for each other and given the same treatment for bites. Arizona brown spiders appear two-toned, with their front being a tan color and the rear grey. They also have a dark brown mark on the front of their body that looks rather like a violin. They tend to stay away from the indoors of people’s homes, nesting in protected outside areas such as under pieces of wood or dead cactus. When they are found in more urban areas, it is usually because they are attached to these pieces of wood or dead cacti brought inside as firewood or for landscaping purposes. The Arizona brown spider is generally very timid and will only bite when they feel they are trapped or being attacked. The initial bite is often painless, with a blister forming over the area as time progresses. This blister can become an open ulcer, and lead to symptoms such as fever and nausea.

Have you ever been bitten by a black widow or Arizona brown spider? What were your symptoms?