From Deseret News archives:

Painted ladies making a colorful trek across Utah

Published: Sunday, April 17, 2005 11:21 p.m. MDT
 |  E-MAIL | PRINT | FONT + - 
What's black and orange and, well, just all over? Painted lady butterflies.

Utah and much of the rest of the West are in the midst of one of the biggest painted lady butterfly migrations in years. Heading north from Mexico, swarms of the flying insects are fluttering past, stopping to feast on nectar from fruit tree blossoms or lounge around, building up energy before they take off again on their long trek.

"There's millions or billions, I don't know" how many, said Todd Stout, vice president of the Utah Lepidopterists Society. "They're in your yard right now . . . and your neighbor's yard. They're nectaring on the plum blossoms."

Spring rains were plentiful in Mexico this past winter, setting the stage for an enormous spring migration. Because of the rains, he said, "the host plants became much more plentiful, the butterflies became much more plentiful."

Every year painted lady butterflies, scientific name Vanessa cardui, migrate north from Mexico. But because they are especially multitudinous this year, the numbers crossing Utah and other states is amazing.

Story continues below
In a New York Times article published by this newspaper Sunday, a California expert, Professor Arthur Shapiro, said residents of that state, Nevada and Arizona may have seen the end of much of the migration. In California and Arizona, according to the Times, one estimate put the number of painted ladies at more than a billion.

But in Utah the mass migration is still going strong. It has been continuing for several weeks.

"I was out collecting last Thursday, and I must have seen 10,000 out in the west desert," said Stout.

He was in the House Mountain Range west of Delta searching for the Indra swallowtail butterfly, a far rarer variety than the painted lady happens to be right now. One might think it would be easy to distinguish the species because this swallowtail is largely black and the painted lady has a lot of orange coloration.

But a butterfly-catcher has eyes trained to detect the motion of the insect, not sort by color. And there were so many painted ladies in the area that trying to separate them from the few swallowtails was the type of visual task that can bring on a headache, he said.

"It was difficult to spot them (the swallowtails) because there were so many painted ladies," Stout added.

"I was climbing the mountains, and the butterflies were everywhere. They were landing on flowers, landing on rocks."

Although they are pressing on with their migration, he said, they will pause to "nectar or to dance around the flowers or to bask."

When he drove, the butterflies were splatting on the car.

Recent comments

...when we lived in northern Nevada, these beautiful butterflies were...

Several years ago... | June 25, 2009 at 12:31 a.m.

Thanks for this informative article and photo -- also the web sites....

Wonderful | June 25, 2009 at 12:20 a.m.

i did not know that it was so much beautifull butterfly but i would...

carlos pena | June 25, 2009 at 12:01 a.m.

Image
Todd Stout

A mounted specimen of a painted lady butterfly shows off its markings.

previousnext

Latest comments

We love you and will keep your family in our prayers. May the Lord bless you...

I don't like the elbow being thrown. I have never played competitive soccer...

Cindy and family, We are so sad for your family's loss. You are in our...

Letters: Health-care felony?

Society doesn't have the authority to infringe upon anyones rights anymore...

Will state consider gay rights law?

To Re:CloseMinded-- where did you get the definition from? Man-yes, man...

Celtics crush Jazz

Sloan coach of the year.get on the Bandwagon.....

People just don't know how to control themselves do they?

3A soccer all-state first team

I firmly believe these selections come from a very political stand point....

Letters: Strange breed in Utah

bit on John Stewart was pretty funny. Does Hannity think only mindless...

Mark and Mike, what happens if the VECC dispatch center goes down? Who backs...

Advertisements
Advertisement