2007年11月23日金曜日

A Butterfly for a Pet

Keeping monarch butterflies (in pupa form) until they hatch and then releasing them is a popular science project in US schools or as an individual avocation. To witness the unfolding of a lovely butterfly, see it spread its wings, then watch it soar into the skies is a moving experience. Since the idea behind these projects is to help the species propagate, releasing the hatched butterflies is a given.

What if they couldn’t be released? How would you keep a butterfly alive in your house?

That was exactly my problem when I became the custodian of several Okinawan “oh-go-madara” butterflies (Lady of the South Seas/Tree Nymph) in pupa form. They were meant to illustrate a lecture, and when the lecture was over, I hung them from the Benjamin tree in my office, as if they were Christmas tree ornaments. Five days later, I had three enormous butterflies as house guests.

It was winter in Tokyo. It wouldn’t have been kind to release them to a flower-free, frozen landscape. Besides, these butterflies—distant cousins to the monarch--contain a mild poison. If a bird or cat happened to swallow one, sayonara!

The butterflies looked adorable, perching on my houseplants. They looked comical, flapping awkwardly in aimless flight patterns around the computer and over the desk. At night, when the lights were turned off, they attached themselves to the ceiling and dangled like tired bat-children fast asleep. In the daytime, they lived dangerously, pausing to rest weightlessly on the back of my sweater as I hunched over the keyboard. What if I chose that moment to lean back and rest?

They also lived long. The record setter stayed alive and healthy for 52 days on a diet of honey and water.

These black and white butterflies are as big as an adult’s hand. They have little fear of human beings and tend to be the crowd pleasers in insectariums because of their size and friendliness to human beings. Their range is limited to areas where the temperature stays above 15 degrees C year round, so in Japan, Okinawa is where to find them.