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Hanatoxin is a toxin found in the venom of the Grammostola spatulata tarantula. [2] The toxin is mostly known for inhibiting the activation of voltage-gated potassium channels, most specifically Kv4.2 and Kv2.1, by raising its activation threshold. [3]
Grammostola is a genus of South American tarantulas that was first described in text by Eugène Louis Simon in 1892. [5] These medium- to large-sized spiders are native to tropical South America , and are usually brown in color, with pinkish or orangish-red hairs.
Symptoms to note: Innocuous spider bites often cause mild pain (like a bee sting) and even itching. But watch out for brown recluses and black widows: The former can cause necrotic lesions, ...
They are located on the pedipalps. They are much shorter and lighter in contrast with other types of urticating hair. These are easily thrown by the spider into the air. [13] Type VI urticating hairs are found in the genus Hemirrhagus. [14] Genera with the most urticating hairs are Lasiodora, Grammostola and Acanthoscurria. [15] [16]
Understanding the symptoms of a brown recluse spider bite can be life-altering. "Some brown recluse spider bites can cause severe, local reactions with necrotic tissue," Dr. Giangreco says. These ...
Other symptoms: Black widow spider bites are usually painful immediately. It can also cause swelling, redness, pain and numbness or tingling radiating out from the bite, MedlinePlus says.
Two venomous spiders, black widows and brown recluse spiders, can cause severe symptoms, experts say. Here are spider bite pictures and tips to identify them.
The Chilean rose tarantula (Grammostola rosea), also known as the rose hair tarantula, the Chilean fire tarantula, or the Chilean red-haired tarantula (depending on the color morph), is probably the most common species of tarantula available in American and European pet stores today, due to the large number of wild-caught specimens exported cheaply from their native Chile into the pet trade.