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Arachnid Pest ID

like Scorpions, Spiders, Mites, and Ticks throughout Southern Nevada. Arachnids are an eight (four pairs)joint-legged invertebrate, with two body parts-head and the body. Some arachnids use their front pair of legs as a sensory tool.

Local Arachnids

found throughout Southern Nevada are:
Black Widow Spiders, Sun Spiders or Vinegaroons, Bark Scorpions, Wolf Spiders, Tarantula, Jumping Spiders, and the California Swollen Stinger Scorpion. While most Arachnids have a source of venom (not poison) to defend themselves from predators or to gather their next meal, most Arachnids in Southern Nevada are not lethal unless you are a young child, elderly, a small pet, or have a severe allergy.

Emergency Contact

Clark County Poison Control 1-800-222-1222.
TheLens provides Arachnid identification prior to rendering any treatment. A properly identified Arachnid will result in properly executed treatment, with little to no future ongoing pest activity. Arachnids are a very select group that require a specialized treatment process. Treatment procedures generally start with sweeping or knocking down webs-this action chases spiders from their normal feeding areas and eliminates the possibility of the spiders reusing the web or consuming the web to spin another web(varies by spider). Liquid insecticide treatments occur around the structure perimeter, along the eaves of the roof line, around windows, and doorways to prevent future infestations.  Please consult with a professional pest control company prior to making your own treatment.
Sun SpiderVinegaroon/Whip Scorpion/Sun Spider Solpugids are not a spider, and does not have venom but may give certain persons, a severe allergy because of a self defense mechanism contained on the tail end on the Solpugid which emits or sprays a vinegar smell. Vinegaroons received the name whip scorpion because of the tail on some of the species and the obvious reason that it looks very similar to a scorpion. Typically the tailless Vinegaroon is a pale yellow color, and grow to be 3 to 4″ long at full maturity but also black to dark brown in color. The Vinegaroon is nocturnal and does not have good eyesight, so it relies on vibrations to find food. This is why it may act aggressive when you first stumble upon a Vinegaroon, but shortly after it may take off running very quickly. The main source of food for the Vinegaroon is other insects, mainly pinhead crickets. The Vinegaroon uses its powerful jaws to tear apart its food and may pinch you if you place a finger in front of its mouth parts, other than its mouth and self defense mechanism Vinegaroons are safe to handle for people that are not allergic to them. If you are finding Vinegaroons in your home or business, it is most likely that you left your door opening during the night time, or have a large unsealed gap.  Insecticide treatments can be used but the best method of treatment is exclusion.
Bark ScorpionBark Scorpion with babiesBark Scorpion Centriroides Exilicauda are a yellowish to cream color, and generally grow to be 2-3″ long living anywhere from 2-6 years (or much longer in the wild). Bark Scorpions glow green in color under a black light, which makes it very easy to see them in the middle of the night. Bark Scorpions eat spiders, centipedes, insects, and other scorpions-controlling these pest can lead to less scorpion activity around a structure. Predators of the Bark Scorpion are tarantulas, large centipedes, lizards, birds, bats, shrews, and mice. Bark Scorpions prefer dark, moist, cool areas like cracks or crevices in rocks, under rocks around the house, leaf clutter, bark of trees, or any other hiding spot around the perimeter of a structure. Bark Scorpions can climb vertical surfaces like trees, exterior/interior walls, and fences-which make it possible to receive a sting on an upper body part like the head, arms, or back, while common areas to be stung are hands, feet, or legs. The sting of a Bark Scorpion is very painful but can be controlled with the common over the counter pain relievers, people with severe allergies, children, or elderly should seek immediate medical attention to prevent loss of life.
Swollen Stinger ScorpionSwollen Stinger ScorpionCalifornia Swollen Stinger Scorpion Anuroctonus Pococki are light brown to brown in color and generally grow to be 3-5″ long, living up to 10-15 years. California Swollen Stinger Scorpions are known for the end of their tail being enlarged compared to other part of the tail. California Swollen Stinger Scorpions hide under rocks, cracks/crevices, or other materials, and glow green under a black light. California Swollen Stinger Scorpions eat spiders, centipedes, insects, and other scorpions-controlling these pest can lead to less scorpion activity around a structure. Like other scorpions, the California Swollen Stinger Scorpion hunts at night for a meal and hides in a dark moist place throughout the daylight hours to stay cool.
Desert Hairy ScorpionGiant Hairy Scorpion Hadrurus Arizonensis are a yellowish to cream color with a gray dorsal, and generally grow to be 4.75 to 7″ long living up to 20 years. Giant Hairy Scorpions are the largest scorpion found in North American and get their name from the erect hairs found on the tail of the scorpion. Giant Hairy Scorpions glow green under a black light, which makes it very easy to see them in the middle of the night. Giant Hairy Scorpions eat spiders, centipedes, insects, and other scorpions-controlling these pest can lead to less scorpion activity around a structure. Giant Hairy Scorpions will create a burrow in the ground to remain cool during the hot days of summer, and come to the surface during evenings to hunt for food.  Giant Hairy Scorpions are more active throughout the summer months and generally become less active throughout the winter months. Even though the Giant Hairy Scorpion may sting you, it may not use the venom because it can take up to 2 weeks to generate additional venom to sting its next prey.
Black Widow SpiderBlack Widow BottomBlack Widow Spider Latrodectus Mactaris vary in size from 8 to 10 mm but may grow up to 3/4″ in body length glossy black in color but may also be dark to light brown typically females will have a red, orange, or yellow hour glass shape on the underside of the spider. The male Black Widow Spider will typically be much smaller than the female generally 1/3 the size of an adult female, and have a red to pale brown strip running down the length of its back. Male Black Widow Spiders do not bite. A Female Black Widow will construct egg masses found within the web that contain anywhere from 200 to 900 eggs per each egg mass. After the eggs hatch, a nymph will be all white and pass through 5 to 8 instars to develop into an adult. Black Widow spiders like to spin webs close to the ground in bushes, rocks, clutter, along the foundation of a house, and retaining walls. These areas are where other insects will be found or will provide excellent coverage from heat, and predators. Las Vegas Black Widow Spider Control starts with flushing the Black Widows out of their hiding spots, TheLens does this by dusting cracks and crevices with an insecticide dust. The action of flushing the Black Widow out of the hiding spot will not only expose the spider to the insecticide left on the surfaces of the treated area, it will also flush any insects that the Black Widow may feed on and prevent re-infestation. TheLens will render a liquid insecticide treatment around the infested area, which will not only provide immediate relief from Black Widow activity but ongoing relief into the future. All TheLens preventative insect treatments include crack and crevice dusting and a liquid insecticide treatment.
Desert RecluseDesert Recluse Spider Loxosceles Deserta usually grow to be 1/2″ in body length with leg spans reaching up to 1.25″. Desert Recluse Spiders are found in the Southwest corner of the United States-Utah, California, Nevada, and Arizona and look very similar to its cousin the Brown Recluse. The Desert Recluse usually will live in the wild, under vegetation native to area. The Desert Recluse bite is similar to the Brown Recluse but is typically not life threatening. If an area becomes necrotic medical attention is advised. Desert Recluse Spider Control involves treating several areas of the landscape area around a home or business. Treatments can be successful by locating the source or reason why your home is better suited for the Desert Recluse Spider to occupy the area first-food, harborage, or conditions. Eliminating these sources and a well laid out pest control program will prevent future activity.
House SpiderDomestic House Spider Tenegaria Domestica vary in size color and shape but may be 1/8 to 1/4″ in body length (females are typically a little larger) with tan to dark brown in color with no definitive markings. Male Domestic House Spiders have a tint of orange on their legs, while the legs of the female have a yellow look. Webs generally originate in funnel shapes and can be found in hidden areas throughout the house-attics, crawl spaces, and closets. A female House Spider can produce several egg sacs in one year with each sac containing up to 400 eggs .
Garden SpiderGarden Spider Agiope vary in size and color but may be up to 1″ in body length with most species being either black or yellow. Large webs generally originate in flat orb shapes and can be found in trees and shrubs around the house. Garden Spider Control involves treating several areas of the landscape area around a home or business.
Grass SpiderGrass Spider Agelenopsis vary in and usually are yellow with light brown to dark brown markings and may be up to 1/4″ in body length. Large webs generally originate in funnel shaped sheets across trees and shrubs around the house. Grass Spider Control involves treating several areas of the landscape area around a home or business.
Sac SpiderOrb Weaver Araneidae comes in a variety of colors, and patterns ranging from brown to black and yellow to orange. This spider is know to spin a new web every night usually in medium to high grasses or upper areas of a house like the soffit area. Orb Weavers typically stay in the center of the web facedown waiting for prey to come in contact with their web. Male Orb Weavers are typically half the size of female Orb Weavers that range in size from 10 to 20 mm. While not the most venomous spider, everyone has different reactions to spider bites so handle this species carefully.
Hono SpiderHobo Spider Tegenaria Agrestis vary in size and brown in color up to 1/2″ in body length. A distinctive flat horizontal web with a funnel at the end can be found along the ground as Hobo Spiders rarely climb vertical surfaces. Do to the Hobo Spiders poor eyesight, it has taken on a reputation of being aggressive. The venom of the Hobo Spider can be somewhat similar to the venomous bite of the Brown Recluse, which leaves necrotic lesions. The Hobo Spider was introduced to the United States around the late 1960 to the upper Northwest states of Washington, Oregon, and Idaho. In 1983 studies determined that bites that occurred in these states were originally blamed on the Brown Recluse, but were actually the result of the Hobo Spider.
Desert TarantulaTarantula Spider Theraphosidae is the largest spider found in the United States with a hairy body that measures up to 2″ with colorations of brown to medium brown. Tarantulas will find a burrow in the ground under landscape timbers or flagstone. Tarantulas barely leave their burrows except for in the late summer and fall when males will venture long distances to find a female to mate with. While Tarantula Spiders are beneficial to our environment and somewhat of a docile creature, their bite can be very painful because of the very large pair of fangs found on the arachnid. Special care should always be used when handling Tarantula Spiders no matter what species you may come in contact with.
Wolf SpiderWolf Spider Lyosidae typically range in body size from 1/2 to 2″ generally hairy and vary from brown to black. Circular shaped floorings are spun over the ground with a burrow close at hand which the spider digs alone. Wolf Spiders will normal hunt and catch its prey instead of relying on a web to catch its prey.
Yellow Sac SpiderYellow Sac Spider Cheiracanthium inclusum typically up to 1/4″ in body length with a pale yellowish to green body. Silken sacs will generally be deposited along ceiling corners, window sills, door frames, under shrubs, logs, stones, and the bark of trees. Yellow sac bites can account for more indoor bites on people than any other spiders in the United States.
Deer TickDeer tick Ixodes Scapularis the tick that is primarily responsible for transmitting Lyme disease in the northern and north central United States. Ticks are not insects but Arachnids, and feed by latching on to an animal host, imbedding their mouthparts into the host’s skin and sucking its blood. Like all species of ticks, deer ticks and their relatives require a blood meal to progress to each successive stage in their life cycles.
Wood TickWood Tick  Dermacentor Variabilis are hard-bodied ticks with a two-year life cycle. The wood tick is among the most accomplished of animal parasites, attaching itself to mammals passing through the woods for its blood meal.  As it is 3-4 mm in size, it is fairly easy to see on exposed clothing or skin and can be removed before it feeds. The wood tick has also been found to carry the Lyme disease bacteria, though there have been no known cases of its being transmitted to humans.
Call TheLens for your next arachnid service quote.
(702) 582-5367