Moths Mimic Spiders

Brenthia hexaselena, a species of metalmark moth, flares its hind wings (HW) and spreads its forewings (FW) to mimic a jumping spider.

For most moths, the sight of a jumping spider makes them panic as they try to escape its lethal pounce. But not so for metalmark moths in the genus Brenthia. These moths stand their ground with hind wings flared and forewings held above the body at a slight angle.

These moths are relying on mimicry to save their lives.

In that pose, the moth looks like a jumping spider
Photo Credit ----> http://www.flickr.com/photos/grrlscientist

Why Ants Rule the World

Scientists estimate modern-day ants first evolved about 120 million years ago. But the fossil record suggests that ants at this time weren't the prevalent insect that they are today. Not until 60 million years later, when some ants adapted to the new world of flowering plants and diversified their diets, did the critters achieve ecological dominance.

Since then they've had a successful run of the planet.

Scientists estimate that about 20,000 ant species crawl the Earth. Taxonomists have classified more than 11,000 species, which account for at least one-third of all insect biomass. The combined heft of ants in the Brazilian Amazon is about four times greater than the combined mass of all of the mammals, birds, reptiles, and amphibians, according to one survey.

Video: Bugzibitz II

See how Jeb, a Madagascar hissing cockroach made his way to the Toronto Zoo.

Bug-eyed

Extreme close-ups of insects.

Rhapsody in Blue

For most of the year, the Karner blue butterfly exists as a tiny, dimpled white egg. But as winter days lengthen into spring, the life inside begins to stir, and soon a pale green caterpillar emerges. It feeds, then cloaks itself in a chrysalis. And then, for one brief week, the Karner blue is on the wing.

Or, a wing and a prayer.

For decades, the butterfly with the fleeting appearance was on the verge of becoming a fleeting species as its oak savannas and pine barrens disappeared. Now, with efforts to restore its preferred habitat and raise the butterflies in captivity, the Karner blue’s future is decidedly more upbeat.

The rare blue butterfly lives for the wild blue lupine. When Karner eggs hatch in April, lint-sized caterpillars emerge to feed on the leaves of the newly sprouted plant. Nothing else will do. And when the mature butterflies are looking to lay eggs for a second brood, again, they’ve only got eyes for lupine.

Honeybees Vanish, Leaving Keepers in Peril

David Bradshaw has endured countless stings during his life as a beekeeper, but he got the shock of his career when he opened his boxes last month and found half of his 100 million bees missing.

In 24 states throughout the country, beekeepers have gone through similar shocks as their bees have been disappearing inexplicably at an alarming rate, threatening not only their livelihoods but also the production of numerous crops, including California almonds, one of the nation’s most profitable.

“I have never seen anything like it,” Mr. Bradshaw, 50, said from an almond orchard here beginning to bloom. “Box after box after box are just empty. There’s nobody home.”

The sudden mysterious losses are highlighting the critical link that honeybees play in the long chain that gets fruit and vegetables to supermarkets and dinner tables across the country.

Beekeepers have fought regional bee crises before, but this is the first national affliction.

Will Beetles Inherit The Earth?

Most modern-day groups of beetles have been around since the time of the dinosaurs and have been diversifying ever since, says new research.

There are approximately 350,000 species of beetles on Earth, and probably millions more yet to be discovered, accounting for about 25% of all known life forms on the planet. The reason for this large number of beetle species has been debated by scientists for many years, but never resolved.

Now a team of scientists has shown that large numbers of modern-day beetle lineages evolved very soon after the first beetles originated, and have persisted ever since. Many modern-day lineages first appeared during the Jurassic period, when the major groups of dinosaurs appeared too.