brazilian wandering spider adaptations
Afterwards, there was disseminated pulmonary stortoration, and worsening of agitation, dyspnea and bradycardia, while being performed orotracheal intubation, manual ventilation, adrenaline and external cardiac massage, she later died.[31]. }. They may stop eating in such a predicament. Spiders from genera such as Cupiennius had been misidentified by experienced arachnologists. However, it's rarely deadly for humans, except for those younger than 10 and . 2023 (Spider Identifications). Ovid Technologies (Wolters Kluwer Health). Omissions? You got {{SCORE_CORRECT}} out of {{SCORE_TOTAL}}, Brazilian Wandering Spider Bite And Venom, Brazilian Wandering Spider Bite On Humans. Corrections? About Us AnimalCorner.org is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. [1] They are highly defensive[2] and venomous nocturnal hunters. [9] The former is treated as a nomen dubium; the latter is the type species of the genus. They will fight each other over territory if there are too many in one area. The venom boosts nitric oxide, a chemical that increases blood flow. In Brazil during the day a Wanding Spider like other Spider hides away from the light which causes the Spider to go into places like empty shoes which is many of the times why it comes in contact with humans a lot. How Did Continental Drift Affect Life On Earth Today? ][14] believe that various spiders like Phoneutria, that use venom mainly to kill prey, can deliver a "dry" bite in defense to purposely conserve their venom, as opposed to a more primitive spider like Atrax that usually delivers a full load. 5 vials of AV (Antivenom) and local anesthetic infiltration were administered, and there was improvement in symptoms, with decrease in sweating, but still agitated, 23 hours after AV, there was a picture of significant diarrhea (semi-liquid stools) evolving to 2nd degree dehydration. The female can be picky, and she often turns down many males before choosing a mating partner. This is very dangerous for the body due to the loss of muscle control. Brazilian wandering spiders are the most venomous spiders on the planet. border: #dbdbdb 0px solid; He also reported that the pain radiated to his chest, and that his heart began to race. Within 30 minutes, symptoms become systemic and include high or low blood pressure, fast or a slow heart rate, nausea, abdominal cramping, hypothermia, vertigo, blurred vision, convulsions and excessive sweating associated with shock. Exercise caution any time you see a spider that's this large. Report: Phoneutria - Integrated Taxonomic Information System. Brazilian wandering spider (Phoneutria nigriventer) Huntsman spider (Sparassidae) Trapdoor spider (Ctenizidae) Tarantula (Theraphosidae) . } Some of the female spiders also ate lizards and snakes. Males perform a dance to get females' attention, and males often fight each other over the female. "So if it did inject all of its venom, it [would] have to wait until its body manufactured more before it could hunt." Danger to humans does not only comprise toxicity, but also factors such as the spider's capacity to deliver a sufficient dose of venom, a disposition that makes a bite likely, and proximity to human habitation. Habitat: The Brazilian Wandering Spider doesn't really live in one specific place which is why it is called a Wandering Spider it just Wanders along the RainForest Floor. #fca_qc_quiz_54348.fca_qc_quiz div.fca-qc-back.wrong-answer, However, with effective anti-venom being introduced for treatment in Brazil to combat the toxic effects of these spiders, the incidence of fatalities have been less. Brazil, Paraguay, Uruguay, Peru, Argentina, Colombia, Guyana, Ecuador. } Brazilian wandering spiders are large, with bodies reaching up to 2 inches (5 centimeters) and a leg span of up to 7 inches (18 cm), according to the Natural History Museum in Karlsruhe, Germany . Brazilian wandering spiders, also called armed spiders or banana spiders, belong to the genus Phoneutria, which means "murderess" in Greek. Why do magnets have north and south poles? You can help Wikipedia by expanding it. A Sainsbury 's customer believes he may have found one of the world 's most venomous spiders in a . This is why many shipments have to be closely watched. The University of California, Riverside, Myth: Deadly Australian/Brazilian spiders | Burke Museum. The photo, widely shared in WhatsApp groups, encouraged those with an erection . This Ctenidae-related article is a stub. They are mainly found in northern South America, with one species in Central America. The Brazilian Wandering spider (Phoneutria sp.) color: #151515; That's bad, because tarantulas, as a whole, aren't out to get you and aren't particularly venomous. Breathing problems can occur as well due to the inflammation of the throat and the lungs. The Brazilian Wandering Spider is one that is very interesting to learn about. However, these bites are rare, and envenomations, or exposure to these toxins from a spider bite, are usually mild, Vetter said. [4], Phoneutria has been introduced to Chile and Uruguay. } They remain with their mother for some time after which they disperse to be on their own. (Photo Credit : Arnaldo de Souza Vasconcellos Jnior / Wikimedia Commons). The Brazilian wandering spiders, Phoneutria fera and P. nigriventer, are sometimes also referred to as banana spiders because they are frequently found on banana leaves. They may stop eating in such a predicament. These spiders are big too, with leg spans reaching around 15 cm (6 inches) and bodies reaching up to 5 cm (2 inches). [3][2] P.fera tends to spend a larger amount of time in vegetation during the early period of its life and spends more time on the ground once it becomes larger. After noticing tiny spiders all over his bedroom, Gil looked under his bed. [18][19] The severity of the cases can be related to the sex of the spider, since the male produces less venom and is less lethal than the females, except for P. boliviensis, where the male is more toxic. Brazilian Wandering Spider Egg [30], In a case that occurred in Itanham, So Paulo, 40-year-old man bitten in the foot, presented significant pain and generalized contractures, dying 6 hours after the accident. The Brazilian wandering spiders, Phoneutria fera and P. nigriventer, are sometimes also referred to as banana spiders because they are frequently found on banana leaves. Phoneutria nigriventer, a species of Brazilian wandering spider, in an "armadeira" threat display. The venom affects ion channels and. They sense things based of the change in the air and very little movements across the leaves. Are Giant Insects Larger Than Humans Possible? Their body length ranges from .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}17 to 48mm (4364 to 1+5764in). Some of the species also can be found throughout Central and South America, from Costa Rica to Argentina, according to a 2008 article in the journal American Entomologist (opens in new tab). An hour after the accident, the serum was injected into the left buttock. In almost all spider species, the female is larger than the male. A - Yes, it looks like a spider egg sac was found. Diving Bell Spider: Anatomy, Habitat, Bite And Other Facts. They sense things based of the change in the air and very little movements across the leaves. } However, interestingly, that behavior is actually a defense mechanism. During the day they hide inside termite mounds, under fallen logs and rocks, in banana plants (hence the "banana spider" nickname), and bromeliads. color: #151515; He cited a Brazilian study, published in the journal Revista do Instituto de Medicina Tropical de So Paulo (opens in new tab) in 2000, that revealed that only 2.3% of people with bites who came to a Brazilian hospital over a 13-year period were treated with antivenom. They are in the record books as the Spider with the deadliest venom in the world. Behavioral Adaptation: The Brazilian Wandering Spider is very aggressive and fights almost anything. Niche: My animals Niche is to be the predator since it doesn't sit back on its web. The father removed the sheets and found the spider, which was referred to the Butantan Institute, identified as a large female Phoneutria nigriventer. He spearheads the content and editorial wing of ScienceABC and manages its official Youtube channel. One of the toxic fractions, designated PhTx-3, has six neurotoxic peptides (Tx3-1 to Tx3-6). Can Newborn Babies Swim Better Than Adults? "Brazilian Wandering spider found under a bunch of bananas in Waitrose home delivery," said one newspaper recently. In fact, most studies show that death mostly occurred in children below seven years of age. How to live without a heart or a brain - Lessons from a Jellyfish. Phoneutria nigriventer toxins block tityustoxin-induced calcium influx in synaptosomes. Nentwig W, Kuhn-Nentwig L. 2013. Brazilian wandering spiders' venom is a complex cocktail of toxins, proteins and peptides, according to the Natural History Museum (opens in new tab) in Karlsruhe, Germany. Their leg span, which may be easier to recognize, is about 6 inches (15 cm) in length. wandering spider, (family Ctenidae), any member of the family Ctenidae (order Araneida), a small group of large spiders of mainly tropical and subtropical regions, commonly found on foliage and on the ground. Please SUBSCRIBE - http://bit.ly/BWchannelAustralian Tour Tickets - http://bit.ly/AUSTOURticketsBuy Coyote's Book - http://bit.ly/BOOKbraveadventuresWatch Mo. And it's no wonder why it's one of the most venomous spiders on Earth. NeuroReport. The males are also known to become very aggressive with each other during the mating season. Furthermore, Sewlal pointed out that venom production requires a lot of a spider's resources and time. [2] Its bite can cause severe symptoms, including extraordinary pain, increased pulse, blood pressure, and respiratory rate, penile erection (priapism) that lasts for several hours, and in several documented cases, death. Heres how it works. These spiders' wandering nature is another reason they are considered so dangerous. The Brazilian Wandering Spider is one of the most aggressive types of Spiders. Stay up to date on the latest science news by signing up for our Essentials newsletter. (Image credit: Joao Paulo Burini/Getty Images), (Image credit: phototrip/iStock/Getty Images). Phoneutria are found in forests from Costa Rica southwards throughout South America east of the Andes including Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil, Paraguay, and into northern Argentina. Their bite can be deadly to humans, especially children, although antivenin makes death unlikely. [8], The characteristic defensive posture with frontal legs held high is an especially good indicator to confirm a specimen is Phoneutria,[4] especially alongside correct colour patterns. Oxford, 1889", https://en.wikipedia.org/w/index.php?title=Phoneutria_fera&oldid=1146591942, This page was last edited on 25 March 2023, at 20:53. [20][21] Symptoms may appear within 10 to 20 minutes after the bite, and death within two to six hours, where severe pain radiates to the rest of the limb, systemic effects include tachycardia, increased blood pressure, vertigo, fever, sweating, visual disturbances, nausea, vomiting, difficulty breathing and paralysis. [11] Cases continue to be reported but without evidence of expert identification. Brazilian wandering spiders' venom is a complex cocktail of toxins, proteins and peptides, according to the Natural History Museum in Karlsruhe, Germany. They are one among the few spider species to pose a threat to mankind. [1] The genus name is from the Greek , meaning "murderess". [31], In So Sebastio, So Paulo, two brothers, 6 months and 18 months old, the children woke up during the night crying and screaming, dying soon after (time of death is not described). From one to two hours after the bite he presented agitation and high blood pressure; at four hours after the heart rate was high at 150 beats per minute, mild tachypnea, cold extremities, profuse sweating, generalized tremors and priapism. border-radius: 2px; Toxoplasmosis: Can Your Cat Make You Go Crazy? This Ctenidae-related article is a stub. "Their bites are a means of self-defense and only done if they are provoked intentionally or by accident," Sewlal said. P.nigriventer mates during the dry season from April to June, which leads to frequent observations of the species during this time. It has been reported that the bite of species belonging to this genus may result in the victims death within one hour after the venom enters the persons body. Ctenus ferus (Perty, 1833) Ctenus sus Strand, 1909. #fca_qc_quiz_54348.fca_qc_quiz span.fca_qc_answer_span { Once mating is complete the male needs to run or the female will consume him. They will fight each other over territory if there are too many in one area. #fca_qc_quiz_54348.fca_qc_quiz div.fca_qc_answer_div:active { This is why they are so afraid of this type of Spider. color: #151515; This is why humans in areas where they are known to live have to be very careful. After a human is bitten by one of these spiders, he or she may experience initial symptoms such as severe burning pain at the site of the bite, sweating and goosebumps, Sewlal said. The juvenile spiders are known to consume pin crickets as well as non-volatile fruit flies for their diet. Associates Program, affiliate advertising program designed to provide a means #fca_qc_quiz_54348.fca_qc_quiz button.fca_qc_next_question { border: #151515 2px solid; Wandering spiders (Ctenidae) are a family of spiders that includes the Brazilian wandering spiders. The two types of spiders look similar. They want to have every chance of being able to successfully mate with a given female. They can be about 2 inches in diameter around the abdomen. [4], These spiders acquired their other common name, "banana spider", because it is claimed that they are occasionally found in shipments of bananas, though the number of reports is exaggerated due to common misidentifications of unrelated spiders. Adult Brazilian wandering spiders have a body that's about 2 inches (5 cm) large. The venom affects ion channels and chemical receptors in victims' neuromuscular systems. buy a product on Amazon from a link on here, we get a small percentage of its Image Credits: Scienceabc.com, Animalstime.com, I.pinimg.com, 1.bp.blogspot.com. He totally gets why JRR Tolkien would create, from scratch, a language spoken by elves, and tries to bring the same passion in everything he does. Do You Feel The Movement Of A Ship When Youre Onboard? What Are Cobwebs? These spiders are nocturnal hunters, so they spend most of their day living and hiding in crevices or under logs, and venture out at night to hunt. That helps support ScienceABC with some money to maintain the site. They are found all over the jungle floors and that is where their names come from. The Secret Wisdom of Nature: Trees, Animals, and the Extraordinary Balance of All Living Things - Stories from Science and Observation (The Mysteries of Nature Book 3). The overall dorsal color of the body and legs is light brown, brown or grey (Figures 1 and 2). #fca_qc_quiz_54348.fca_qc_quiz div.fca_qc_answer_div { DNA metabarcoding, a technique that examines the DNA and RNA in a sample, of the guts of 57 spiders identified 96 prey species, including flies, beetles, butterflies, moths, grasshoppers, locusts and crickets, according to research from the University of Tolima and the University of Ibagu in Colombia (opens in new tab). He was taken to the hospital and received treatment, but his condition continued to deteriorate. The spider's name means "murderess" in Greek, which is appropriate for the deadly arachnid. As of July2021[update], the World Spider Catalog accepts the following genera:[5]. "Top 5 Facts Of The Banana Spider - Technology Org", "On distinguishing two often-misidentified genera (Cupiennius, Phoneutria) (Araneae: Ctenidae) of large spiders found in Central and South American cargo shipments", "Brazilian Wandering Spiders: Bites & Other Facts", "Brazilian wandering spiders: Bites & other facts", "A clinico-epidemiological study of bites by spiders of the genus Phoneutria", "DIAGNSTICO DOS ACIDENTES POR ANIMAIS PEONHENTOS", "Envenomation by Wandering Spiders (Genus Phoneutria)", "Intersexual variations in the venom of the Brazilian 'armed' spider Phoneutria nigriventer (Keyserling, 1891)", "Prey and Venom Efficacy of Male and Female Wandering Spider, Phoneutria boliviensis (Araneae: Ctenidae)", "Dosagem Comparada Da Atividade Dos Extratos Glandulares E Do Veneno Puro De Phoneutria Nigriventer", "Contribuio Ao Estudo Do Veneno Das Aranhas", "Systemic envenomation caused by the wandering spider, "Spider attack chef saved by mobile phone snap", "Acidentes por Aranhas ARANEISMO - PDF Free Download", "Homem passa mal aps sofrer picada de aranha venenosa em Barbacena", "ACIDENTES POR Phoneutria sp - ppt carregar", Venomous South American spider found in Manitoba grocery store, Spider found between bananas in Dutch supermarket, Brazilian wandering spider killed in Dutch hypermarket. p. 253-264. They dont seem to do well in captivity either due to the stress it causes them. [3] Other English names include armed spiders (armadeiras in Brazilian Portuguese) and banana spiders (a name shared with several others). Scientific discovery can be unexpected and full of chance surprises. Sometimes they are found in crates of bananas and they are shipped all over the world. Their first two legs are armed with strong bristles on the lower side. The victim was dizzy and nauseated, felt cold, began to drool and vomit, and exhibited priapism. All rights reserved. Brazilian wandering spiders are known for being aggressive, thanks to the alarming toxicity of their bite. ScienceABC participates in the Amazon When threatened or under attack, they raise their first two pairs of legs, indicating to their predators that the they are ready to attack. [22] These spiders seem to produce a smaller amount of venom during cold months (June to September) a minimum amount of 0.03mg, an average of 0.44mg and a maximum of 1.84mg, during the summer months. Clock Spider: What Is The The Legend Surrounding This Giant Spider Species? #fca_qc_quiz_54348.fca_qc_quiz div.fca_qc_answer_div.fakehover, color: #151515; "So if the spider were to attack frequently and use up all of its venom, it [would] be safe to assume that it has a ready food supply to replace the energy and resources used. It may or may not be a deadly species, according to the. #fca_qc_quiz_54348.fca_qc_quiz div:not( .correct-answer ):not( .wrong-answer ){ They are found all over these regions so it is very hard to count the number or them. Some[who? Spiders always undergo sexual reproduction and this does not change within this species. They have an aggressive defense posture, in which they raise their front legs straight up into the air. The species vary in color, though all are hairy and mostly brown and gray, although some species have lightly colored spots on their abdomen. The leg span of this particular Spider can be up to6 inches. Research into one species of Brazilian wandering spider, Phoneutria boliviensis, revealed that these spiders eat a mix of arthropods and reptiles. Updates? Its bite, which delivers neurotoxic venom, can be deadly to humans, especially children, although antivenom makes death unlikely. [28], A 70-year-old man, bitten by a spider with a legspan of 5 to 6cm, he was cutting sugarcane at the residence of So Pedro de Alcantara, in the countryside, when a spider jumped on his shoulder, and came "walking" by the right arm to the back where it bit his hand (bled at the time), he felt intense pain at the time. Nevertheless, there are a few well-attested instances of death. At 12 o'clock, a new injection of serum and at 13 o'clock, there was an improvement in the state. The two most commonly known and feared species of the wandering spider are Phoneutria fera and Phoneutria nigriventer. [3] Other English names include armed spiders(armadeirasin Brazilian Portuguese) and banana spiders(a name shared with several others). Q - Is it a Brazilian wandering spider egg sac? It so happens that the venom the Brazilian spider Phoneutria nigriventer injects in its victim has been found to contain a few toxic polypeptide fractions, some of which have been purified and proven to be neurotoxic (Source). [7][8] Additionally, some Phoneutria species lack red hairs on the chelicerae, making it an unreliable identification feature. Every few months, almost like clockwork, a media hype about these arachnids . Zootaxa 1526: 1-36. However, these spiders bite only when provoked or in an attempt to save themselves from any impending danger. People who are bitten by a Brazilian wandering spider should seek medical attention immediately. Members of the genus are commonly referred to as Brazilian wandering spiders. What Is The Clock Spider And The Legend Surrounding It? Many people trap and kill them because they dont want to take a risk. [24], In another case, a 22-year-old woman, four months pregnant, was bitten on the hand. After 50 minutes, the patient was admitted to the emergency department of the HU with blood pressure 150x90 (after captopril), mild dyspnea (patient pneumectomized by TU), with paresthesias and local condition as previously reported. Other features are the strong ventral marking on the underside of the legs with contrasting dark mid-segments and lighter joints, and the pattern on the ventral (underside) of the abdomen with several rows of black dots, or an overall reddish colour. He was later treated with anesthetics, tetanus prophylaxis and anti-venom, and recovered 36 hours after the bite. Let us know if you have suggestions to improve this article (requires login). He was treated with anesthetics, anti-venom and fluid replacement. for sites to earn commissions by linking to Amazon. Spider Ecophysiology. Where Do They Come From? This dramatic and intimidating posture exposes the scarlet hair surrounding the fangs on some species. It will warn when it attacks by putting 4 legs up and showing in red fangs which is a warning sign. It was updated on Dec. 19, 2021 by Live Science editor Laura Geggel. color: #FFFFFF; How Big Is It And Does It Bite? [1], As of March2021[update], the World Spider Catalog accepted the following species:[1]. Species of this genus are notorious for being venomous, with their bites having an adverse impact on humans. The taxonomy of Brazilian wandering spiders, according to the Integrated Taxonomic Information System (ITIS) (opens in new tab), is: Kingdom: Animalia Subkingdom: Bilateria Infrakingdom: Protostomia Superphylum: Ecdysozoa Phylum: Arthropoda Subphylum: Chelicerata Class: Arachnida Order: Araneae Family: Ctenidae Genus: Phoneutria. Because of the toxicity of their bite and their alarming-looking posture, these spiders have a reputation for being aggressive. Being the most dangerous Spider of all isnt something that many are fond of. The Burke Museum of Natural History and Culture. The spider was positively identified as a Phoneutria by Wolfgang Bcherl. In densely populated areas, Phoneutria species usually search for cover and dark places to hide during daytime, leading them to hide in houses, clothes, cars, boots, boxes and log piles, where they may bite if accidentally disturbed. box-shadow: 0 2px 0 0 #3c7d73; Why Do People Indulge In Extreme And Dangerous Sports? The . [15] A study in March 2009 suggests that Phoneutria inject venom in approximately one-third of their bites, and only a small quantity in one-third of those cases. Gil Wizen won the Urban Wildlife . [2] Members of the genus are commonly referred to as Brazilian wandering spiders. In one case, a single spider killed two children in So Sebastio. "How deadly are Brazilian wandering spiders? The bite of a Brazilian wandering spider may cause a few painful pinpricks to full-blown bite. [8] The presence of a dark linear stripe or stripes on the frontal (dorsal) palps and presence of a single thin black line running anterior-posterior along the dorsal carapace may help identify Phoneutria. Aggressive and highly venomous, it kills some 5 people across the world annually. Brazilian wandering spiders roam . According to the Integrated Taxonomic Information System (ITIS), the different species of Brazilian wandering spiders include Phoneutria fera, Phoneutria nigriventer, Phoneutria bahiensis, Phoneutria boliviensis, Phoneutria eickstedtae, Phoneutria keyserlingi, Phoneutria pertyi and Phoneutria reidyi. This dimorphism is no different in the Brazilian wandering spider. Wandering spiders are known to hunt large prey, for example hylid species Dendropsophus branneri. But, as the late Jo-Anne Sewlal, an arachnologist at the University of the West Indies in Trinidad and Tobago, pointed out, "Classifying an animal as deadly is controversial," as the amount of damage depends on the amount of venom injected. published 11 April 2017. Most of the bites were from the species P. nigriventer and P. keyserlingi in eastern coastal Brazil. The spiders in the genus can grow to have a leg span of 13 to 18cm (5 to 7in). The species P. fera is native to the northern portion of South America in the Amazon of Brazil, Venezuela, Ecuador, Peru and the Guyanas. Other characteristics: They often lift their body in an erect posture and hold their frontal legs high to defend themselves against predators. Description. [4], The genus Phoneutria was started by Maximilian Perty in 1833. A photographer's shocking picture of a Brazilian wandering spider hiding under his bed has made him one of the winners of the Wildlife Photographer of the Year. PhTx3 is found in the venom of the Brazilian Wandering Spider. but are capable of complex behaviors and adaptations. In Brazil, Phoneutria is only absent in the northeastern region north of Salvador, Bahia. Phoneutria fera is a species of spider with medically significant venom in the family Ctenidae found in South America (Colombia, Ecuador, Peru, Brazil, Suriname, and Guyana). } Their threatened stance serves as a warning, indicating to predators that the poisonous spider is ready to attack. [24], A 23-year-old market worker moving a bunch of bananas was bitten on his hand by P. nigriventer in So Paulo, Brazil. P.nigriventer is known to hide in dark and moist places in or near human dwellings. Even though they are fairly large they stick to prey that is quite small. They live in the forests of Costa Rica, in Columbia, Peru, Brazil, and Paraguay. She creates a sack for them make out of the silk her body produces. They have a body position that is very different. Updates? They are highly defensive and venomous nocturnal hunters. [8] The species P. fera is native to the northern portion of South America in the Amazon of Brazil, Venezuela, Ecuador, Peru and the Guyanas. You can help Wikipedia by expanding it. Language links are at the top of the page across from the title. Thy love places that are dark and moist. [9] Perty placed two species in the genus: Phoneutria rufibarbis and Phoneutria fera. They are alternately called banana spiders, a name that they also share with other species because members of this genus have often been found in banana shipments. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. Parenteral hydration was started, 3h30 min post AV, her heart rate was 160 beats per minute, and respiratory rate was 72 at 4 hours post AV. Phoneutria bahiensis, a species of Brazilian wandering spider. Brazilian wandering spider Genus Phoneutria / Photo taken by Techuser. Immediately after the bite he experienced severe local pain, blurred vision, profuse sweating and vomiting. Let us know if you have suggestions to improve this article (requires login). background-color: #3c7d73; A big admirer of Richard Feynman and Nikola Tesla, he obsesses over how thoroughly science dictates every aspect of life in this universe, at least. The genus Phoneutria derives from the Greek , meaning "murderess",[7] and the species fera which is derived from the Latin term ferus (also written as feros) meaning wild animal.