Tropical Swallowtail Moths are now being observed in many areas in Metro Manila.
According to Edriel Lee, a research associate, these insects are known as Tropical Swallowtail Moth or Lyssa zampa. They are large, with wingspans that can reach up to 6 inches in width. Their bodies are dark brown with a white stripe down the middle of the wings.
They are not dangerous to humans or animals.
They do not bite, are not poisonous, and do not carry disease. Lee said they also do not cause damage to buildings or food. Their larvae do not eat human food crops.
Why are they suddenly so numerous in the city?
Since this moth is native to the Philippines, it is normal to see them. But the number of them in cities now may be due to changes in the environment, especially as they are looking for plants to live on. During droughts, plants become more attractive to caterpillars, so this is also possible.
They like light at night.
Lee said, like other moths, they are attracted to light — this is called positive phototaxis. That's why we often see them near house lights or streetlights at night.
There's no need to panic if you see one.
Lee's advice is not to panic if you see one. You can take a photo of it as long as you don't hurt it. You can also post it online with a location to help scientists track its movements.
