Scientists discovered the first insects with sex-reversed genitalia in Brazilian caves. Yes, by sex reversed we mean that the female insects have penis-like genitalia and the males have vagina-like ...

Scientists studied the internal anatomy that make a female-male role reversal possible in a group of Brazilian cave insects. By Jack Tamisiea The penis has a variety of peculiar shapes and sizes: the ...

Burrowing bees generally prefer to make their nests in the open, but some 20,000 years ago their ancestors lived in a cave ...

WASHINGTON (Reuters) - This may be the role reversal to end all role reversals. Scientists on Thursday described four insect species that dwell in extremely dry caves in Brazil, feed on bat guano and ...

Bees are frequently associated with large queen-serving colonies featuring hundreds if not thousands of insects. In actuality ...

In a Caribbean cave where owls once spat out the bones of their prey, scientists have uncovered a nesting strategy that ...

Some insects have detachable penises, others produce sperm that is 20 times the size of their own body. Others have evolved with special equipment to help them tear rivals off potential mates. Insects ...

Learn how environmental constraints and a lack of soil led ancient bees to reuse fossil cavities in a Caribbean cave, leaving the first known evidence of this behavior.

In Mexico’s Cueva del Azufre (the Sulphur Caves), a small fish called the shortfin molly (Poecilia mexicana) is on the way to becoming two separate species. Those that live in the dark interior of the ...

In a Caribbean cave, researchers discovered hundreds of fossils with bee nests within them. It is the first time this behavior has been recorded, a new study finds.

For the first time ever, paleontologists have found fossil traces of burrowing bees nesting inside the buried bones of other ...