With its disappearance, "we sort of lost a piece of the biodiversity puzzle that made up the tapestry of the San Francisco Bay area," a study co-author said.
This stunning footage of a puppy gently playing with a pair of butterflies is sure to put a smile on your face, and has been viewed 16 million times
The 0.2-inch-long specimen was identified in amber from the Baltic Sea region in northern Europe.
"I do regret trying to go so far above and beyond anything I'd ever done that I created a no-win scenario for myself."
A small needle and delicate hand helped this monarch take flight.
Baculovirus forces its caterpillar host to climb up trees before it bursts out to infect others on the ground below.
The butterflies could hold clues to human infertility.
The populations of 44 of the country's 58 species have dropped dramatically over the last 40 years.
About 40 percent of pollinators like bees and butterflies are at risk, according to a UN-issued report.
Ants provide protection in return for food gifts from the caterpillars.