23/10/2025
INOFENSIV APPEARANCE CATERPILLAR LETAL DECEIVE
"Harless but dangerous in appearance, this is the well-known stuffed caterpillar in the immature state of a lepidoptera, a moth or moth, whose venom, a protein with a high molecular mass, is one of the strongest compounds in the insect world.".
The health alert for the presence of the stuffed caterpillar or woolly cat (Megalopyge opercularis) The harmless and "striking" aspect of the insect is a lethal deception: its "fur" hides venomous spines that break at the slightest contact, injecting a powerful toxin that acts as a defense mechanism.
Pain and Neurological Symptoms
The symptoms reported after contact are devastating and rapid. The pain is so intense that, according to testimonies collected by the entomologist, it is comparable to "suffering a fracture, being shot or walking on embers.". The discomfort is not limited to the point of contact, but can radiate from the fingers to the shoulder in a matter of minutes.
The toxin directly affects the peripheral nervous system and can cause a number of systemic reactions:
• Severe, stabbing pain.
• Nausea and vomiting.
• Tachycardia (increased heart rate).
• Headache (headache).
• Abdominal discomfort and inflamed lymph nodes (lymphadenitis).
• In rare and severe cases, respiratory distress and even anaphylactic shock may occur.
Although severe pain usually subsides by about an hour and reddish spots (erythema) within a day, a high dose of venom can prolong symptoms for up to five days.
Emergency Treatment and Prevention
In the absence of accidental contact, and in the absence of an antidote, treatment focuses on mitigating symptoms and eliminating residual venom:
1. Remove spines: The first vital step is to remove stinging hair. It is recommended to apply adhesive tape (such as silver or mask tape) to the area and remove it repeatedly to remove the remains of the spines embedded in the skin.
2. Cleaning and cooling: Wash the area with soap and water, and apply ice or cold compresses to help control pain and swelling.
3. Topical relief: A paste of baking soda and water or calamine lotion can be applied to calm irritation and itching.
4. Medical care: It is crucial to seek medical attention immediately, especially if there are severe systemic symptoms (difficulty breathing, constant vomiting, severe swelling). Treatment for pain (possibly opioids or severe painkillers), itching and allergic reactions may be given at the hospital.
Researcher Rivera Cervantes links the resurgence of the caterpillar with the temporary past of abundant rains, a climatic condition that has historically led to its proliferation, as happened in previous years in Guadalajara. However, he stressed that it is not advisable to spray on a massive scale, as this measure would indiscriminately affect other insects beneficial to the ecosystem, such as bees and other caterpillar species.
The call to the population is for extreme surveillance:
• Avoid contact at all costs.
• If it needs to be handled, wear long-sleeved clothing, gloves and tweezers.
• Report the sighting to the Civil Protection authorities or 911.
• Assist the investigation by taking photographs or videos so that the CUCSur can confirm its presence and identify the trees where it is staying.
