10 Lagartas mais venenosas do Mundo

10 Most Poisonous Caterpillars in the World
(There are differences between various lists).
In nature one of the things that animals learn very quickly is that if something appears too, is very colorful and flashy, it's probably toxic or palatable, or both. The caterpillars will show below that are very colorful, with good reason, is a warning that they kindly give you that are toxic. They contain by which if touched can cause serious problems, most burns can, in severe cases can cause nausea, vomiting, and fever.

In case of stings
Should you get stung by a caterpillar, Poison Information Center recommends this treatment: Place Scotch tape over the affected area and strip off repeatedly to remove spines. Apply ice packs to reduce the stinging sensation, and follow with a paste of baking soda and water. If the victim has a history of hay fever, asthma or allergy, or if allergic reactions develop, contact a physician immediately.

Moral of the story: Step away from the world’s cutest caterpillar.

1. Puss caterpillar (Megalopyge opercularis)

The Cousin Itt of caterpillars, this guy (pictured above) goes by the name of puss caterpillar or asp — and both names make sense. Puss, because this total cutie pie is as fuzzy as a kitty; and asp, as in snake, because this is one of the most toxic caterpillars in North America.

The venom comes from poisonous spines neatly concealed by the irresistibly fuzzy surface. When touched, the spines break off and lodge in the skin, releasing the venom. Mother Nature at her sneakiest. According to the toxin library of the American Association of Clinical Chemistry (AACC), this is no simple sting: Intense throbbing pain develops within five minutes of contact, with pain extending up the affected arm. Other symptoms may include headaches, nausea, vomiting, intense abdominal distress, lymphadenopathy, lymphadenitis, and sometimes shock or respiratory stress.

2. Saddleback caterpillar (Acharia stimulea)
File:Acharia stimulea 0795036.jpg
Taking the prize for “Caterpillar Most Resembling a Chinese New Year Dragon,” the cute and beautiful saddleback caterpillar is native to eastern North America, although it looks better suited for much more exotic climes.

The pert pompoms these caterpillars sport are more than decorative. Like much of the rest of this creature's body, the pompoms bear urticating hairs that secrete irritating venom. The stings are very painful, and they can cause swelling, nausea, and leave a rash that can last for days.

3. White cedar moth caterpillar (Leptocneria reducta)
File:Leptocneria reducta caterpillar (White Cedar Moth).jpg
As described by the Coff’s Harbour Butterfly House, by day the white cedar moth caterpillar “hides in crevices on or near the ground. In the gloom of an evening, they swarm as a seething mass of hundreds of hairy brown bodies, undulating in eerie silent flow up the tree trunk and along the branches to the leaves, which they eat voraciously … when a tree becomes defoliated, they wander everywhere looking for another one.”

This caterpillar that’s reminiscent of an angora sweater can indeed pack a punch — the bristles are capable of inducing a frightful case of urticaria.

4. Io moth caterpillar (Automeris io)

Animal, vegetable, mineral ... caterpillar! Like a tiny oasis of palm trees, the sweet, colorful io moth caterpillar has a broad range, from Manitoba and in the southern extremes of Ontario, Quebec, and New Brunswick in Canada, to Montana, North Dakota, South Dakota, Nebraska, Colorado, New Mexico, Texas, Utah, east of those states and down to the southern end of Florida. Io gets around.

And yes, those frond-like spines have a painful venom that is released with the slightest touch. Some people experience severe reactions and require medical attention, while some only itch or have a burning sensation.

5. Hag moth caterpillar (Phobetron pithecium)
File:Phob pith.JPG
Whichever camp you’re in, one thing’s for sure: there’s little mystery as to why this caterpillar garnered its nickname, the “monkey slug.”

Complete with six pairs of curly projections densely covered in hairs — the “limbs” can fall off without harming the larvae, but the hairs can cause some fierce irritation.

6. Hickory tussock caterpillar (Lophocampa caryae)
File:Lophocampa.JPG
Such elegance! Dapper, with its velvety back and sweeping bristles, this creature looks more vintage feather boa than larva — but larva it is. And stinging larva, at that. Although some people have little to no reaction to this caterpillar, others have a reaction that ranges from a mild to a fairly severe rash comparable to poison ivy.

7. Pine processionary caterpillar (Thaumetopoea pityocampa)
Processionary
Somebody needs a haircut — but then somebody would be much less dangerous and not nearly as cute. The larvae of the pine processionary moth could be the model for caterpillar shampoo if there were such a thing.

But all that hair, touchable as it may look, should never be touched. Not only are the extremely irritating hairs harpoon-shaped, but the caterpillar can eject them when threatened, at which point they penetrate all areas of exposed skin, replete with urticating venom.

8. Giant silkworm moth caterpillar (Lonomia oblique)
File:Lonomia-obliqua-citsc-1.jpg
Lonomia caterpillars are the most deadly of all caterpillars.
The Lonomia is a family of moths found in South America. There are 14 different species of Lonomia Moths. The most dangerous is the Lonomia Obliqua. They are most common in Southern Brazil. As caterpillars, these moths are highly venomous. They kill about three people a year. The anticoagulant properties of their venom are of great interest to the Medical community. There are hundreds of published studies on their venom. It has been proven to stop life-threatening blood clots in people. Scientists are working on learning the chemical makeup of the venom so they can develop medications from it.
Nature got it right with this one — it's designed it to look as scary as it is. This is not the caterpillar you want to meet in a dark alley. Known as the “assassin caterpillar,” the South American larvae are responsible for at least 500 deaths, and probably many more.

The spear-like bristles penetrate the skin and deliver a dose of toxin which leads to headache, fever, vomiting and malaise before a severe bleeding disorder ensues leading to ecchymosis, hematuria, pulmonary and intracranial hemorrhages (yes, that's blood flooding the brain), and acute renal failure.

9. Hairy caterpillar (Costa Rican)
File:Hairy caterpillar (Costa Rica).jpg
Costa Rican hairy caterpillar. The spiny bristles are a self-defense mechanism

10. Cinnabar Moth Caterpillar (Tyria jacobaeae)
File:Tyria jacobaeae qtl1.jpg
Included in this type of voracious caterpillars, but if he ran out of food so that there is mutual cannibalism among caterpillars.
To maintain the living worm is equipped with enough weapons poison deadly to their prey. If touched by humans, the toxins that make us itch and rash all over his body.

Source: http://www.mnn.com/
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