Butterflies sorta creep me out. First, they start out as another bug and then they cocoon themselves. Who does that? And just take a look at this butterfly egg, it’s borderline alien looking. National ...

Sandy Jespersen wasn't looking for a rare butterfly. She was seeking shade from the hot sun at Brazos Bend State Park where she works as a volunteer. She headed for the canopy of trees at the ...

It’s always a treat to spot Zebra Longwing butterflies (Heliconius charithonia). These exotic-looking insects are common in Mexico and Central America, and they’re found year-round in parts of Texas ...

Male zebra longwing butterfly vision sticks to a duller pallette, perhaps for mating reasons. The genes that explain this may help unlock how differences between sexes evolve. By Veronique Greenwood ...